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Study of Elementary Particles Using OPAL Detector at LEP-II

Research Project

Project/Area Number 09044060
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research Field 素粒子・核・宇宙線
Research InstitutionThe University of Tokyo

Principal Investigator

KOBAYASHI Tomio  The University of Tokyo, International Center for Elementary Particle Physics, Professor, 素粒子物理国際研究センター, 教授 (50126059)

Co-Investigator(Kenkyū-buntansha) MASHIMO Tetsuo  The University of Tokyo, Center for Elementary Particle Physics, Assistant, 素粒子物理国際研究センター, 助手 (60181640)
MORI Toshinori  The University of Tokyo, International Center for Elementary Particle Physics, A, 素粒子物理国際研究センター, 助教授 (90220011)
KAWAMOTO Tatsuo  The University of Tokyo, International Center for Elementary Particle Physics, A, 素粒子物理国際研究センター, 助教授 (80153021)
KOMAMIYA Sachio  The University of Tokyo, International Center for Elementary Particle Physics, P, 素粒子物理国際研究センター, 教授 (80126060)
ORITO Shuji  The University of Tokyo, Graduate School of Science, Professor, 大学院・理学系研究科, 教授 (10092173)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥18,400,000 (Direct Cost: ¥18,400,000)
Fiscal Year 1998: ¥8,700,000 (Direct Cost: ¥8,700,000)
Fiscal Year 1997: ¥9,700,000 (Direct Cost: ¥9,700,000)
KeywordsCERN / LEP-II / OPAL experiment / Leadglass calorimeter / Standard Model / W boson / Higgs boson / Supersymmetry / ヒッグス粒子
Research Abstract

The world highest energy e^+e^- collider LEP at CERN has started its operation in 1989. After completion in 1995 of highly successful physics program at the Z resonance, LEP has started the energy upgrade program LEP2 in. 1996, exceeding the collision energy sufficient to produce the W boson in pair. In 1997 the LEP collision energy was increased to 183 GeV and further pushed up to 189 0eV in 1998. The OPAL experiment, in which we have been playing a leading role, has successfully collected data at this new energy region. In order to make full use of these data, we worked on understanding the detector performance at high energy, precise calibration of the detector, developments for improved physics analysis technique to gain precision of measurements and sensitivity for searches, and we also pursued a number of new physics topics.
1. About 4000 W pairs events have been collected. The production cross-section, total W width and decay branching ratios were precisely measured. Accurate measurement of the W mass, together with the precision results of the Z boson, provides information for crucial tests of the Standard Model. Based on the increased data sample of W pair events, precision of W mass determination has been largely improved.
2. Systematic investigations were made for varieties of Standard Model processes such as fermion pair production, Z pair production, single W production and general four-fermion final states. The Standard Model is found to work well at this higher energy region.
3. The mass of the Higgs boson, which is a key element of the Standard Model yet undetected, is found to be heavier than about 91 GeV.
4. Searches for Supersymmetric particles were performed and improved limits on the parameters in the theory have been obtained.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (211 results)

All Other

All Publications (211 results)

  • [Publications] The OPAL Collaboration: "Seach for Anomalous Production of Di-lepton Events with Missing Transverse Momentum in e^+e^- Collisions at √<S>=161 and 172 GeV" Euro. Phys. Journal. C4. 47-74 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of Triple Gauge Boson Coupligs form W^+W^- Production at √<S>=172 GeV" Euro. Phys. Journal. C2. 607-625 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Seach for Anomalous Production of Photonic Events with Missing Energy in e^+e^- Collisions at √<S>=130-172 GeV" Euro. Phys. Journal. C2. 607-625 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for the Bc Meson in Hadronic Z^O Decays" Phys. Lett.B420. 157-168 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the one-prong Hadronic Tau Branching Ration at LEP" Euro. Phys. Journal. C4. 193-206 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurements of the B^o_s and Λ^o_b Lifetimes" Phys. Lett.B426. 161-179 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for charged Higgs bosons in e^+e^- Collisions at √<S>=130-172 GeV" Phys. Lett.B426. 180-192 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Determination of the Production Rate of D^<*O> Mesons and of the Ratio V/(V+P) in Z^O→cc^^- Decays" Euro. Phys. Journal. C5. 1-17 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Production of f_0 (980),f_2 (1270) and φ (1020) in Hadronic Z^O Decay" Euro. Phys. Journal. C4. 19-28 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Investigation of CP Violation in B^O→J/4K^o_s Decays at LEP" Euro. Phys. Journal. C5. 379-388 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 4 LET experiments: "Combination of Preliminary Electroweak Measurements and Constraints on the Standard Modei" CERN-PPE/97-154.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for an Excess in the Production of Four-Jet Events from e^+e^- Collisions at √<S>=130-184 GeV" Phys. Lett.B429. 399-413 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "A Search for Neutral Higgs Bosons in the MSSM and Models with Two Scalar Field Doublets" Euro. Phys. Joural. C5. 19-40 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "An Upper Limit on the Anomalous Magnetic Moment of the tau lepton" Phys. Lett.B431. 188-198 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Stable and Long-lived Massive Charged Particles in an Excess in e^+e^- Collisions at √<S>=130-183 GeV" Phys. Lett.B433. 195-208 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Photon and Light Meson Production in Hadronic Z_O Decays" Euto. Phys. Journal. C5. 411-437 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The LEP Working Group for Higgs Boson Searches: "Lower Bound for the Standard Model Higgs Boson Mass from Combining the Results of the far LEP Experiments" CERN-EP/98-046.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "An Upper Limit for the tau-neutrino Mass from T→5π^± V_T Decays" Euro. Phys. Journal. C5. 229-237 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Bose-Einstein Correlations of Three Charged Pions in Hadronic Z^O Decays" Euro. Phys. Journal. C5. 239-248 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Inclusive Production of Charged Hadrons and K^o_s Mesons in Photon-Photon Collisions" Euro. Phys. Journal. C6. 253-264 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Multi-photon production in e^+e^- Collisions at √<S>=183 GeV" Phys. Lett.B438. 379-390 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Higgs Bosons and New Particles Decaying into Two Photons at √<S>=183 GeV" Phys. Lett.B437. 218-230 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-pair Production at 183 GeV at LEP" Euro. Phys. Journal. C6. 1-18 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Production of X_<C2> Mesons in Photon-Photon Collisions at LEP" Phys. Lett.B439. 197-208 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL, Collaboration: "Search for Scalar Top and Scalar Bottom Quarks at ECM=183 GeV at LEP" Euro. Phys. Journal. C6. 225-238 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "First Measurement of Z/γ^* Production in Compton Scattering of Quasi-real Photons" Phys. Lett.B438. 391-404 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the Longitudinal Cross-Section using the Direction of the Thrust Axis in Hadronic Eve at LEP" Phys. Lett.B440. 393-402 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Acoplanar Lepton Pair Events in e^+e^- Annihilation at √<S>=161, 172, and 183 GeV" CERN-EP/98-122 Submitted to Euro. Phys. Journal.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the Average Polarization of b Bcuryons in Hadronic Z^O Decay" Phys. Lett.B444. 539-554 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Chargino and Neutralino Production at √<S>=181, 184 GeV at LEP" CERN-EP/98-136 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "A Measurement of Rb using a Double Tagging method." CERN-EP/98-137 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Anomalous Photonic Events with Missing Energy in e^+e^- Collisions at √<S>=130, 136 and 183 GeV" CERN-EP/98-143 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the Semilieptonic Branching Ratto of Charm Hadrons produced in Z^O→cc Decays" CERN-EP/98-146 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "W^+W^- production and triple gauge boson couplings at LEP energies up to 183 GeV" CERN-EP/98-167 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Higgs Bosons in e^+e^- Collisions at 183 GeV" CERN-EP/98-173 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Bose-Einstein Correlations in e^+e^-→W^+W^- at 172 and 183 GeV" CERN-EP/98-174 (Submitted to Euro. ?Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Baryon and Lepton Number Violating Z^O Decays" CERN-EP/98-194 (Submitted to Phys. Lett.).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "A Measurement of the T→e nu nu bar Branching Ratio" CERN-EP/98-175 (Submitted to Phys. Lett.).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "A Measurement of the Product Branching Ratio f (b→Λ_b). BR (Λ_b→ΛX) in Z^O Decays" CERN-EP/98-186 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the B^+ and B^O Lifetimes and Search for CP (T) Violation using Reconstructed Second Vertio" CERN-EP/98-195 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications]

    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the W Mass and Width in e^+e^- Collisions at 183 GeV" CERN-EP/98-197 (Submitted to Phys. Lett.).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Searches for R-Parity Violating Decays of Gauginos at 183 GeV at LEP" CERN-EP/98-203 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Intermittency and Correlations in Hadronic Z^O Decays" CERN-EP/99-009 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Measurement of the QED Structure of the Photon" CERN-EP/99-010 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 4 LEP experiments: "A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model" CERN-EP/99-015.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Experimental Properties of Gluon and Qucurk Jets from a Point Source" CERN-EP/99-028 (Submitted to Euro. Phys. Journal).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Search for Scalar Top and Scalar Bottom Quarks at ECM=189 GeV at LEP" 26th February 1999, (Submitted to Phys. Lett. ).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurements of the b Quark Forward-backward Asymmetry around the Z^0 Peak Using Jet Charge and Vertex Charge" Zeit.fur Physik. C75. 385-396 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Study of phi (1020) , D^<**> and B^* Spin Alignment in Hadronic Z^0 Decays" Zeit.fur Physik. C74. 437-449 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "QCD Studies with e^+ e^- Annihilation Data at 161 GeV" Zeit.fur Physik. C75. 193-207 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "A Measurement of the Hadronic Decay Current and the nu_<tau> -helicity in tau^-*pi^- pi^- pi^+ V_<tau>" Zeit.fur Physik. C75. 593-605 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Production of P-Wave Charm and Charm-Strange Mesons in Hadronic Z^0 Decays" Zeit.fur Physik. C76. 425-440 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "A Study of B Meson Oscillations Using Hadronic Z^0 Decays Containing Leptons" Zeit.fur Physik. C76. 401-415 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Scalar Top and Scalar Bottom Quarks at ROO<s>=170-172 GeV in e^+ e^- Collisions" Zeit.fur Physik. C75. 409-420 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "An Upper Limit on the Branching Ratio for tau Decays into Seven Charged Particles" Phys.Lett.B404. 213-222 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the Branching Fractions and Forward-Backward Asymmetries of the Z^0 into Light Quarks" Zeit.fur Physik. C76. 387-400 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "An Updated Study of B Meson Oscillations using Dilepton Events" Zeit.fur Physik. C76. 417-423 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Cargino and Neutralino Production at ROO<s>=170 and 172 GeV at LEP" Euro.Phys.Journal. C2. 213-236 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the Quark to Photon Fragmentation Function throught the Inclusive Production of Prompt Photons in Hadronic Z^0 Decays" Euro.Phys.Journal. C2. 39-48 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the Q^2 Evolution of the Photon Structure Function F^<gamma>_" Phys.Lett.B411. 387-401 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of f (c*D^*+X) , f (b*D^<*+>X) and GAMMA_<cc>/GAMMA_<had> Using D^*^* Mesons" Euro.Phys.Journal. C1. 439-459 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Spin Alignment of Leading K^* (892) ^0 Mesons in Hadronic Z^0 Decays" Phys.Lett.B412. 210-224 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "A Measurement of the B^0_ Lifetime Using Reconstructed D^-_ Mesons" Euro.Phys.Journal. C2. 407-416 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Tests of the Standard Model and Constraints on New Physics from Measurements of Fermion-pair Production at 130-172 GeV at LEP" Euro.Phys.Journal. C2. 441-472 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Polarization and Forward-Backward Asymmetry of LAMBDA Baryons in Hadronic Z^0 Decays" Euro.Phys.Journal. C2. 49-59 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the Photon Structure Function F^<gamma>_ at Low X" Phys.Lett.B412. 225-234 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Multiplicity distributions of gluon and quark jets and tests of QCD analytic predictions" Euro.Phys.Journal. C1. 479-494 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Multi-photon Final States in e^+ e^- Collisions at ROO<s>=130-172 GeV" Euro.Phys.Journal. C1. 21-30 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for the Standard Model Higgs Boson in e^+ e^- Collisions at ROO<s>=161-172 GeV" Euro.Phys.Journal. C1. 425-438 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the W Boson Mass and W^+ W^- Production and Decay Properties in e^+ e^- Collisions at ROO<s>=172 GeV" Euro.Phys.Journal. C1. 395-424 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for a Massive Di-photon Resonance at ROO<s>=91-172 GeV" Euro.Phys.Journal. C1. 31-43 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Unstable Heavy and Excited Leptons in e^+ e^- Collisions at ROO<s>=170-172 GeV" Euro.Phys.Journal. C1. 45-64 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Anomalous Production of Di-lepton Events with Missing Transverse Momentum in e^+ e^- Collisions at ROO<s>=161 and 172 GeV" Euro.Phys.Journal. C4. 47-74 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of Triple Gauge Boson Coupligs from W^+ W^- Production at ROO<s>=172 GeV" Euro.Phys.Journal. C2. 607-625 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Anomalous Production of Photonic Events with Missing Energy in e^+ e^- Collisions at ROO<s>=130-172 GeV" Euro.Phys.Journal. C2. 607-625 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for the Bc Meson in Hadronic Z^0 Decays" Phys.Lett.B420. 157-168 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Measurement of the one-prong Hadronic tau Branching Rations at LEP" Euro.Phys.Journal. C4. 193-206 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Mesurements of the B^0_ and LAMBDA^0_ Lifetimes" Phys.Lett.B426. 161-179 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for charged Higgs bosons in e^+ e^- Collisions at ROO<s>=130-172 GeV" Phys.Lett.B426. 180-192 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Determination of the Production Rate of D^<*0> Mesons and of the Ration V/ (V+P) in Z^0*cc Decays" Euro.Phys.Journal. C5. 1-17 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Production of f_0 (980) , f_2 (1270) and phi (1020) in Hadronic Z^0 Decay" Euro.Phys.Journal. C4. 19-28 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Investigation of CP Violation in B^0*J/psiK^0_ Decays at LEP" Euro.Phys.Journal. C5. 379-388 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The LEP Collaborations ALEPH,DELPHI,L3, OPAL,the LEP Electroweak Working Group and the SLD Heavy Flavor and Electroweak Groups: "A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model" CERN-PPE/97-154.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for an Excess in the Production of Four-Jet Events from e^+ e^- Collisions at ROO<s>=130-184 GeV" Phys.Lett.B429. 399-413 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "A Search for Neutral Higgs Bosons in the MSSM and Models with Two Scalar Field Doubles" Euro.Phys.Journal. C5. 19-40 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "An Upper Limit on the Anomalous Magnetic Moment of the tau lepton" Phys.Lett.B431. 188-198 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Stable and Long-lived Massive Charged Particles in an Excess in e^+ e^- Collisions at ROO<s>=130-183 GeV" Phys.Lett.B433. 195-208 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Photon and Light Meson Production in Hadronic Z^0 Decays" Euro.Phys.Journal. C5. 411-437 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The LEP Working Group for Higgs Boson Searches, ALEPH,DELPHI,L13 and OPAL: "Lower Bound for the Standard Modle Higgs Boson Mass from Combining the Results of the four LEP Experiments" CERN-EP/98-046.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "An Upper Limit for the tau-neutrino Mass from tau*5pi^* nutau Decays" Euro.Phys.Journal. C5. 229-237 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Bose-Einstein Correlations of Three Charged Pions in Hadronic Z^0 Decays" Euro.Phys.Journal. C5. 239-248 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Inclusive Production of Charged Hadrons and K^0_ Mesons in Photon-Photon Collisions" Euro.Phys.Journal. C6. 253-264 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Multi-photon production in e^+ e^- Collisions at ROO<s>=183 GeV" Phys.Lett.B438. 379-390 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Higgs Bosons and New Particles Decaying into Two Photons at ROO<s>=183 GeV" Phys.Lett.B437. 218-230 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Tests of the Standard Model and Constraints on New Physics from Measurement of Fermion-pair Production at 183 GeV at LEP" Euro.Phys.Journal. C6. 1-18 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Production of chi_<c2+> Mesons in Photon-Photon Collisions at LEP" Phys.Lett.B439. 197-208 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, K.Ackerstaff et al.: "Search for Scalar Top and Scalar Bottom Quarks at ECM=183 GeV at LEP" Euro.Phys.Journal. C6. 225-238 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "First Measurement of Z/gamma^* Production in Compton Scattering of Quasi-real Photons" Phys.Lett.B438. 391-404 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurement of the Longitudinal Cross-Section using the Direction of the Thrust Axis in Hadronic Events at LEP" Phys.Lett.B440. 393-402 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Acoplanar Lepton Pair Events in e^+ e^- Annihilation at ROO<s>=161,172 and 183 GeV" CERN-EP/98-122 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurement of the Average Polarization of b Baryons in Hadronic Z^0 Decay" Phys.Lett.B444. 539-554 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Chargino and Neutralino Production at ROO<s>=181-184 GeV at LEP" CERN-EP/98-136 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "A Measurement of R_b using a Double Tagging Method" CERN-EP/98-137 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Anomalous Photonic Evetns with Missing Energy in e^+ e^- Collisions at ROO<s>=130,136 and 183 GeV" CERN-EP/98-143 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurement of the Semilieptonic Branching Ratio of Charm Hadrons produced in Z^0*cc Decays" CERN-EP/98-146 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "W^+ W^- production and triple gauge boson couplings at LEP energies up to 183 GeV" CERN-EP/98-167 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Higgs Bosons in e^+ e^- Collisions at 183 GeV" CERN-EP/98-173 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Bose-Einstein Correlations in e^+ e^- * W^+ W^- at 172 and 183 GeV" CERN-EP/98-174 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Baryon and Lepton Number Violating Z^0 Decays" CERN-EP/98-194 submitted to Phys.Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "A Measurement of the tau*enunu Branching Ratio" CERN-EP/98-175 submitted to Phys.Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "A Measurement of the Product Branching Ratio f (b*LAMBDA_b) .BR (LAMBDA_b*LAMBDAX) in Z^0 Decays" CERN-EP/98-186 submitted to Euro.Phys.Journal Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurement of the B^+ and B^0 Lifetimes and Search for CP (T) Violation using Reconstructed Secondary Vertices" CERN-EP/98-195 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Color reconnection studies in e^+ e^- * W^+ W^- at ROO<s>=183 GeV" CERN-EP/98-196 submitted to Phys.Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurement of the W Mass and Width in e^+ e^- Collisions at 183 GeV" CERN-EP/98-197 submitted to Phys.Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Searches for R-Parity Violating Decays of Gauginos at 183 GeV at LEP" CERN-EP/98-203 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Intermittency and Correlations in Hadronic Z^0 Decays'" CERN-EP/99-009 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Measurements of the QED Structure of the Photon" CERN-EP/99-010 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The LEP Collaborations ALEPH,DELPHI,L3, OPAL,the LEP Electroweak Working Group and the SLD Heavy Flavor Group: "A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model" CERN-EP/99-015.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Experimental Properties of Gluon and Quar Jets from a Point Source" CERN-EP/99-028 submitted to Euro.Phys.Journal.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration, G.Abbiendi et al.: "Search for Scalar Top and Scalar Bottom Quarks at ECM=189 GeV at LEP" 26th February 1999 submitted to Phys.Lett.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] The OPAL Collaboration: "Seach for Anomalous Production of Di-lepton Events with Missing Transverse Momentum in e^+e^- Collisions at √<S>=161 and 172 Gev" Euro.Phys.Journal. C4. 47-74 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of Triple Gauge Boson Coupligs from W^+W^- Production at √<S>= 172 GeV" Euro.Phys.Journal. C2. 607-625 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Seach for Anomalous Production of Photonic Events with Missing Energy in e^+e^- Collisions at √<S>=130-172 GeV" Euro.Phys.Journal. C2. 607-625 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for The Bc Meson in Hadronic Zo Decays" Phys.Lett.B420. 157-168 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the one-prong Hadronic Tau Branching Ratios at LEP" Euro.phys.Journal. C4. 193-206 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurements of the B^o_S and Λ^o_b Lifetimes" Phys.Lett.B426. 161-179 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for charged Higgs bosons in e^+e^- collisions at √<S>=130-172 GeV" Phys.Lett.B426. 180-192 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Determination of the Production Rate of D^<*0> Mesons and of the Ratio V/(V+P) in Z^o→cc Decays" Euro.Phys.Journal. C5. 1-17 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Production of fo(980),f_2(1270) and φ(1020) in Hadronic Z^o Decay" Euro.Phys.Journal. C4. 19-28 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Investigation of CP Violation in B^o→J/φK^o_s Decays at LEP" Euro.Phys.Journal. C5. 379-388 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 4 LEP experiments: "Combination of Preliminary Electroweak Measurements and Constraints on the Standard Modei" CERN-PPE/97-154.

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for an Excess in the Production of Four-Jet Events from e^+e^- Collisions at √<S>=130-184 GeV" Phys.Lett.B429. 399-413 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Search for Neutral Higgs Bosons in the MSSM and Hodels with Two Scalar Field Doublets" Euro.Phys.Journal. C5. 19-40 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "An Upper Limit on the Anomalous Magnetic Moment of the tou lepton" Phys.Lett.B431. 188-198 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Stable and Long-lived Massive Charged Particles in an Excess in e^+e^- Collisions at √<S>=130-183 GeV" Phys.Lett.B433. 195-208 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Photon and Light Meson Production in Hadronic Z° Decays" Euro.Phys.Journal. C5. 411-437 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The LEP Working Group for Higgs Boson Searches: "Lower Bound for the Standard Model Higgs Boson Mass from Combining the Results of the four LEP Experiments" CERN-EP/98-046.

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "An Upper Limit for the tau-neutrino Mass from T→5π^<【plus-minus】> V_T Decays" Euro.Phys.Journal. C5. 229-237 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Bose-Einstein Correlations of Three Charged Pions in Hadranic Z^o Decays" Euro.Phys.Journal. C5. 239-248 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Inclusive Production of Charged Hadrons and K^o_s Mesons in Photon-Photon Collisions" Euro.Phys.Journal. C6. 253-264 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Multi-photon production in e^+e^- Collisions at √<S>=183 GeV" Phys.Lett.B438. 379-390 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Higgs Bosons and New Particres Decaying into Two Photons at √<S>=183 GeV" Phys.Lett.B437. 218-230 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Tests of the Standard Model and Constraints on New Physics from Measurements of Fexmion-pair Production at 183 GeV at LEP" Euro.Phys.Journal. C6. 1-18 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Production of Xc_2 Mesons in Photon-Photon Collisions at LEP" Phys.Lett.B439. 197-208 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Scalar Top and Scalar Bottom Quarks at ECM=183 GeV at LEP" Euro.Phys.Journal. C6. 225-238 (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "First Measurement of Z/γ^* Production in Compton Scattering of Quasi-real Photons" Phys.Lett.B438. 391-404 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Longitudinal Cross-Section using the Direction of the Thrust Axis in H〓nic Events at LEP" Phys.Lett.B440. 393-402 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Acoplanar Lepton Pair Events in e^+e^- Annihilation at √<S>=161,172,and 183 GeV" CERN-EP/98-122 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Average Polarization of b Bcuryons in Hadronic Z° Decay" Phys.Lett.B444. 539-554 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Chargino and Neutralino Production at √<S>=181-184 GeV at LEP" CERN-EP/98-136 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of Rb using a Double Tagging Method" CERN-EP/98-137 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Anomalous Photonic Events with Missing Errergy in e^+e^- collisions at √<S>=130,136 and 183 GeV" CERN-EP/98-143 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Semilieptonic Brarching Ratio of Charm Hadrons produced in Z°→cc Decays" CERN-EP/98-146 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "W^+W^- production and triple gauge boson couplings at LEP energies up to 183 GeV" CERN-EP/98-167 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Higgs Bosons in e^+e^- Coollisions at 183 GeV" CERN-EP/98-173 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Bose-Einstein Correlations in e^+e^-→ W^+W^- at 172 and 183 GeV" CERN-EP/98-174 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Baryon and Lepton Number Violating Z° Decays" CERN-EP/98-194 Phys.Lett.(submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of the T→e nu nu bar Branching Ratio" CERN-EP/98-175 Phys.Lett.(submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of the Product Branching Batio f(b→Λ_b),BR(Λb→ΛX) in Z^o Decays" CERN-EP/98-186 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the B^+ and B^o Lifetimes and Search for CP(T) Violation using Reconstructed Seuonda Vertices" CERN-EP/98-195 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Colour reconnection studies in e^+e^-→w^+w^- at √<S>=183 GeV" CERN-EP/98-196 Phys.Lett.(submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the W Mass and Width in e^+e^- Collisions at 183 GeV" CERN-EP/98-197 Phys.Lett.(submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Searches for R-Parity Violating Decays of Gauginos at 183 GeV at LEP" CERN-EP/98-203 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Intermittency and Correlations in Hadronic Z^o Decays" CERN-EP/99-009 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurements of the QED Structure of the Photon" CERN-EP/99-010 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] 4 LEP experiments: "A Combination of Preliminary Electroweak Measurements and Constraints on the Standard Model" CERN-EP/99-015.

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Experimental Properties of Gluon and Quark Jets from a Point Source" CERN-EP/99-028 Euro.Phys.Journal. (submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Scalar Top and Scalar Bottom Quartcs at ECM = 189 GeV at LEP" 26th February 1999,Phys.Lett.(submitted to).

    • Related Report
      1998 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Supersymmetric Particres and Anomalous Four-Jet Production at √<S>=130 and 136 GeV at LEP" Z. Phys.C73. 201-216 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Cllaboration: "Strange Baryon Production in Hadronic Z^0 Decays" Z. Phys.C73. 569-585 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Σ^+, Σ^0 and Σ^- Hyperon Prduction in Hadronic Z^0 Decays" Z. Phys.C73. 587-599 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of the Charm and Bottom Farward-Backward Asymmetries using D Mesons at LEP" Z. Phys.C73. 379-396 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Neutral Higgs Bosos in Z^0 Decays Using the OPAL Detector at LEP" Z. Phys.C73. 189-199 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Inclusive Jet Production in Photon-Photon Collisions at √<S>=130 and 136 GeV" Z. Phys.C73. 433-442 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of the Average Bottom Haclron Lifetime" Z. Phys.C73. 397-408 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Excited Leptons in e^+e^- Collisions at √<S>=161 GeV" Phys. Lett.B391. 197-209 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Unstable Neutral and Charged Leptons in e^+e^- Collisions at √<S>=161 GeV" Phys. Lett.B393. 217-230 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the QED Structure Functions of the Photon Using Azimuthal Correlations at LEP" Z. Phys.C74. 49-55 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Production of Fermion-pair Events in e^+e^- Collisions at 161 GeV Centre-of-wass Energy" Phys. Lett.B391. 221-234 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collabration: "Photonic Events with Large Missing Energy in e^+e^- Collisions at √<S>=161 GeV" Phys. Lett.B391. 210-220 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Analysis of Hadronic Final States and the Photon Structure Function F^r_2 in Deep Inelastic Electron-Photon Scattering at LEP" Z. Phys.C74. 33-48 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for the Standard Moded Higgs Boson in e^+e^- Collisions at √<S>=161 GeV" Phys. Lett.B393. 231-244 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Mesurement of Vcb Using B^0→D^*+l^-rl Decays" Phys. Lett.B395. 128-140 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "An Improved Measurement of Rb Using a Double Tagging Method" Z. Phys.C74. 1-17 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Semireptonic Branching Fraction of Inclusive b Baryon Decays to Λ" Z. Phys.C74. 423-435 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Charged Scalar Leptons Using the OPAL Detector at √<S>=161 GeV" Phys. Lett.B396. 301-314 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for CP Violation in Z^0→τ^+τ^- and an Upper Limit on the Weak Dipole Moment o the τ Lepton" Z. Phys.C74. 403-412 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "B^* Production in Z^0 Decays" Z. Phys.C74. 413-422 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Triple Gauge Boson Coupling αwφ from W^+W^- Production in e^+e^- Collisions at √<S>=161GeV" Phys. Lett.B397. 147-157 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the b Quark Forward-backward Asymmetry around the Z^0 Reak Using Jet Charge and Vertex Charge" Z. Phys.C75. 385-396 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Study of φ (1020), D^*^± and B^* Spin Alnment in Hadronic Z^0 Decays" Z. Phys.C74. 437-449 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "QCD Studies with e^+e^- Annihilation Data at 161GeV" Z. Phys.C75. 193-207 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Measurement of the Hadronic Decay Current and the Vr-helicity in T^-→π^-π^-π^-Vr" Z. Phys.C75. 593-605 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Production of D-Wave Charm and Charm-Strange Mesons in Hadronic Z^0 Decays" Z. Phys.C76. 425-440 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "A Study of B Meson Oscillations Using Hadronic Z^0 Decays Containing Leptons" Z. Phys.C76. 401-415 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Scalar TOP and Scalar Bottom Quarks at √<S>=170-172 GeV in e^+e^- Collisions" Z. Phys.C75. 409-420 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "An Upper Limit on the Branching Ratio for τ Decays into Seven Charged Particles" Phys. Lett.B404. 213-222 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Branching Fractions and Foruard-Backward Asymmetries of the Z^0 of tje Z^0 into Light Quarks" Z. Phys.C76. 387-440 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "An Updated Study of B Meson Oscillations using Dilepton Events" Z. Phys.C76. 417-423 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the quarlt to photon Fragmentation Function through the Inclusive Production of Prompt Photons in Hadronic Z^0 Decays" Eur. Phys. J.C2. 39-48 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Q^2 Evolution of the Photon Structure Function F^r_2" Phys. Lettt.B414. 387-401 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of f(c→D^*+X), f(b→D^*+X) and Γcc / Γhad Using D^*^± Mesons" Eur. Phys. J.C1. 439-459 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Spin Alignment of Leading K^* (892)^0 Mesons in Haclronic Z^0 Decays" Phys. Lett.B412. 210-224 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the Photon Stucture Function F^r_2 at low X" Phys. Lett.B412. 225-234 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Multiplicity distributions of gluon and quark jets and tests of QCD analytic prediction" Eur. Phys. J.C1. 479-494 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Multi-photon Fmal States in e^+e^- Collisions at √<S>=130-172 GeV" Eur. Phys. J.C1. 21-30 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for the Standard Model Higgs Boson in e^+e^- Collisions at √<S>=161-172 GeV" Eur. Phys. J.C1. 425-438 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Measurement of the WBoson Mass and W^+W^- Production and Decay Properties in e^+e^- Collisions at √<S>=172 GeV" Eur. Phys. J.C1. 395-424 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for a Massive Di-photon Resonance at √<S>=91-172 GeV" Eur. Phys. J.C1. 31-43 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] The OPAL Collaboration: "Search for Unstable Heavy and Excited Leptons in e^+e^- Collisions at √<S>=170-172 GeV" Eur. Phys. J.C1. 45-64 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-09-16  

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