1989 Fiscal Year Annual Research Report

電子・陽電子衝突実験に於ける次世代測定器の開発研究

Research Project

Project/Area Number	63302012
Research Institution	Osaka University
Principal Investigator	長島順清大阪大学, 理学部, 教授 (90044768)
Co-Investigator(Kenkyū-buntansha)	広瀬立成東京都立大学, 理学部, 教授 (70087162) 釜江常好東京大学, 理学部, 教授 (90011618) 浅野侑三筑波大学, 物理工学系, 助教授 (80100808) 岩田正義高エネルギー物理学研究所, 教授 (80022698) 湯田春雄東北大学, 理学部, 教授 (90108457)
Keywords	トリスタン / Bファクトリ- / φファクトリ- / JLC / バ-テックス検出器 / 遷移輻射検出器 / 高集積高速回路 / 高磁場ソレノイド電磁石
Research Abstract	1.トリスタン電子・陽電子衝突加速器で得られたデ-タから、多種にわたる物理テ-マについて解析を行いVENUS、TOPAZ、AMY、SHIP共に多くの論文を発表してきた。これらのデ-タ解析及びシミュレ-ションによる検討のために各グル-プで作業部会を開き、今後の物理解析に対する方向と測定器改善の具体策を得た。 2.トリスタン実験での今後行われる予定の高精度実験に不可欠な高ルミノシティ用超電導四重極磁石の開発、反応点を決定するためのバ-テックス検出器(ストロ-チェンバ-、SSD、ファイバ-)、電子とパイ中間子を識別する粒子選別検出器(シンクロトロン輻射検出器、遷移輻射検出器)、高速デ-タ処理回路系等の研究を各担当者が進め、実用化に成功した。 3.次世代電子・陽電子実験に対応できる加速器をめざして下記のような加速器改善の各種検討が精力的に行われた。(1)電子ビ-ムの偏極に関する研究、(2)AR蓄積リングの高ルミノシティ化の研究、(3)非対称衝突型加速器の研究。 4.次世代電子・陽電子衝突実験としてのBファクトリ-、φファクトリ-の可能性について系統的な検討作業が加速器の検討と並行して行われ、その実現性についての見通しが得られた。 5.TeV領域での電子・陽電子衝突を実現するために、本研究グル-プのメンバ-も参加して加速器の各種基礎開発研究が始まり、JLCに向けた作業が行われた。 6.測定器開発に対する有機的研究協力の一環として、ハドロンコライダ-検討のグル-プとも協同して作業部会を開き、共同開発を進めた。

Research Products

(54 results)

All Other

All Publications (54 results)

[Publications] Y.Hemmi et al.: "The VENUS Drift Chamber for a Fast Z-Trigger" Nuclear Instruments and Methods in Physics Research. A281. 462-468 (1989)
[Publications] Y.Fukushima et al.: "New Readout Electronics for the VENUS Liquid Argon Calorimeter at TRISTAN" IEEE Transactions on Nuclear Science. 36. 670-674 (1989)
[Publications] Y.Ikegami et al.: "Readout Electronics for the VENUS Muon Drift Tubes at TRISTAN" IEEE Transactions on Nuclear Science. 36. 665-669 (1989)
[Publications] T.Arima et al.: "Radiation Damage of Silicon Junction Photodiodes by Evaporation Neutrons from Nuclear Spallation Reactions with 12 GeV Protons" Japanese Journal of Applied Physics. 28. 1957-1962 (1989)
[Publications] Y.Asano et al.: "Monte Carlo Evaluation of a New Track-Finding Method for the VENUS Muon Detector" Japanese Journal of Applied Physics. 28. 1981-1988 (1989)
[Publications] Y.Doi et al.: "A2 Tesla Superconducting Magnet for the AMY Detector" Nuclear Instrument and Methods in Physics Research. A274. 95-112 (1989)
[Publications] Y.Fukushima et al.: "Current Status of the φ-Factory-A Conceptual study of the Precise Measurement of the CP Violating Paramenter Re(ε'/ε)" KEK Preprint 89-159 Submitted for the publication.
[Publications] T.Tauchi: "Estimation of Beam Backgrounds for the TOPAZ Vertex Chamber" KEK Preprint 89-83 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,Tsukuba,Japan.
[Publications] T.Yamashita et al.: "Measurements of the Electron Drift Velocity and Positive Ion Mobility for Gases Containing CF_4" Nuclear Instrument and Methods in Physics Research. A283. 709-715 (1989)
[Publications] N.Ujiie and M.Ikeda: "CAMAC-Controlled 4-level Discriminator with Four Settable Threshold Levels" Nuclear Instrument and Methods in Physics Research. A281. 335-340 (1989)
[Publications] Y.Mizuno et al.: "Transverse Electron Beam Polarimetry in TRISTAN Main Ring" KEK Preprint 89-141 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989 Tsukuba,Japan.
[Publications] K.Tsuchiya et al.: "Superconducting Quadrupole Magnets for the TRISTAN Low-Beta Insertion" KEK Preprint 89-65 Proc.the IIth Int.Conf.on Magnet Technology,Aug.22-Sep.1,1989,Tsukuba,Japan.
[Publications] H.Fukuma et al.: "A Design of Double Ring Colider in the TRISTAN Tunnel" KEK Preprint 89-13 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] Y.Funakoshi et al.: "Observation of Multibunch Phenomena in TRISTAN Accumulation Ring" KEK Preprint 89-98 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] E.Kikutani et al.: "Measurement of Luminosity in TRISTAN Accumuration Ring" KEK Preprint 89-118 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] N.Ishihara et al.: "A Test Facility of Super-Accurate Alignment System for a Linear Collider" KEK Preprint 89-87 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] M.Suetake et al.: "Damped Cavity for Linear Collider" KEK Preprint 89-164 Proc.7th Symp.on Accelerator Science and Technology,Dec.12-14,1989,Osaka,Japan.
[Publications] J.Urakawa and Linear Collider Study Group: "Timing System of the Accelerator Test Facility for a Linear Collider" KEK preprint 89-175 to be published in Nuclear Instruments and Methods in Physics Research.
[Publications] J.Urakawa et al.: "Cntrol System of the Test Accelerator Facility for a Linear Collider" KEK Preprint 89-105 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] T.Higo et al.: "X-Band Accelerating Structure for Japan Linear Collider" KEK Preprint 89-93 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] H.Mizuno et al.: "X-Band Klystron Diode Test for Japan Linear Collider(JLC)" KEK Preprint 89-114 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] J.Kishiro et al.: "The Microwave Free Electron Laser Test Stand at KEK" KEK Preprint 89-111 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] S.Hiramatsu et al.: "Conceptual Disign of a Linear in the TBA/FEL Regime" KEK Preprint 89-110 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] H.Kurino et al.: "Beam Guiding in the Ion Focused Regime at the KEK FEL Test Stand" KEK Preprint 89-109 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.
[Publications] K.Abe et al.VENUS Group: "Search for Isolated Photons from Flavot-Changing Neutral-Current Decay of a New Quark at the KEK e^+e^- Collider TRISTAN" Physical Review Letters. 63. 1776-1779 (1989)
[Publications] K.Abe et al.VENUS Group: "Search for Fourth-Generation Quark with |Q|=e/3 on e^+e^- Collisions at √<S>=56-57 GeV" Physical Review. D39. 3524-3527 (1989)
[Publications] K.Abe et al.VENUS Group: "Measurement of the Differential Cross Sections of e^+e^- →γγ and e^+e^-→γγγ at √<S>=55,56,56.5 and 57 GeV and Search for Unstable Photino Pair Production" Zeitschrift fur Physik C-Particles and Fiields. 45. 175-191 (1989)
[Publications] K.Abe et al.VENUS Group: "Study on Single Photon Production at √<S>=54-61.4 GeV" Physics Letters. B232. 431-436 (1989)
[Publications] S.Odaka et al.VENUS Group: "New Limits on Neutral Scalar Bosons" Journal of the Physical Society of Japan. 58. 3037-3041 (1989)
[Publications] K.Abe et al.VENUS Group: "New Limits on Neutral Scalar Bosons" Journal of the Physical Society of Japan. 58. 3037-3041 (1989)
[Publications] K.Abe et al.VENUS Group: "Charge Asymmetry of Hadron Jets and Limits on the Compositenes Scales in the e^+e^-→qq Reaction at 〈√<S>〉=57.6 GeV" Physics Letters. B232. 425-430 (1989)
[Publications] A.Taketani et al.VENUS Group: "Search for SUSY Pertners of Changed Leptons in e^+e^- Collisions with s up to 60.8 GeV" Physics Letters. B234. 202-208 (1990)
[Publications] K.Abe et al.VENUS Group: "Measurement of R and Search for New Quark Flavors Decaying into Multi-Jet Final States in e^+e^- Collisions between 54.0 and 61.4 GeV C.M. Energies" Physics Letters. B234. 382-388 (1990)
[Publications] K.Abe et al.VENUS Group: "Measurement of the Reactions e^+e^-→μ^+μ^- and e^+e^- →γ^+γ^- between √<S>=50 and 60.8 GeV" KEK preprint 89-192 Submitted to Z.Phys.C.
[Publications] K.Abe et al.VENUS Group: "Determination of the QCD Scale Parameter Λ_<MS> with QCD Cascade on the Basis of the Next-to-leading Logarithmic Approximation" Submitted to Physics Letters B.
[Publications] K.Tobimatsu and Y.Shimizu: "Radiative Bhabha Scattering in Special Configurations with Missing Final e^+ and/or e^-" KEK preprint 89-9 Submitted to Comp.Phys.Commun.
[Publications] I.Adachi et al.TOPAZ Group: "A Search for a Fourth-Generation Charge -1/3(b')Quark Using Inclusive Muons in e^+e^- Annihilations at √<S>=56.5-60.8 GeV" Physics Letters. B229. 427-431 (1989)
[Publications] I.Adachi et al.TOPAZ Group: "Measurement of the Total Hadronic Cross Sections in e^+e^- Annihilations and Determination of the Standard Model Parameters" Physics Letters. B234. 525-533 (1990)
[Publications] I.Adachi et al.TOPAZ Group: "A Serch for Excited Leptons in the Energy Region√<S>=52-60.8 GeV" Physics Letters. B228. 553-559 (1990)
[Publications] I.Adachi et al.TOPAZ Group: "Measurements f α_s in e^+e^- Annihilation at √<S>=53.3 GeV59.5 GeV" Physics Letters. B227. 495-500 (1989)
[Publications] I.Adachi et al.TOPAZ Group: "A Study of Pion Pair Production in Two-Photon Process" Physics Letters. B234. 185-190 (1990)
[Publications] I.Adachi et al.TOPAZ Group: "A Search for a b'Quark with Flavor Changing Neutral Current Decay Modes at TRISTAN" Physics Letters. B234. 197-201 (1990)
[Publications] S.Eno et al.AMY Group: "Search for a Foueth-Generation Charge-1/3 Quark" Physics Review Letters. 63. 1910-1913 (1989)
[Publications] E.H.Low et al.AMY Group: "Search for Non-Minimal Higgs Production in e^+e^- Annihilation at √<S>【.simeq】56 GeV" Physics Letters. B228. 548-552 (1989)
[Publications] N.M.Shaw et al.AMY Group: "Search for Unstable Heavy Neutral Leptons in e^+e^- Annihilations at √<S> from 50 to 60.8 GeV" Physics Review Letters. 63. 1342-1345 (1989)
[Publications] A.Bacala et al.AMY Group: "Measurements of Cross Sections and Charged Asymmetries for e^+e^- → γ^+γ^- and e^+e^- →μ^+μ^- for √<S> from 52 to 57 GeV" Physics Letters. B218. 112-118 (1989)
[Publications] T.Mori et al.AMY Group: "Measurements of the e^+e^- Total Hadronic Cross Sections and a Determination of M_z and Λ-_<MS>" Physics Letters. B218. 499-507 (1989)
[Publications] S.K.Kim et al.AMY Group: "Search for the Substructure of Leptons in High Energy QED Processes at TRISTAN" Physics Letters. B223. 476-484 (1989)
[Publications] Y.Sakai et al.AMY Group: "A Search for SUSY particles in e^+e^- Anihilation at √<S>=50-60.8 GeV" To be published in Physics Letters B.
[Publications] H.Sagawa et al.AMY Group: "Measurement of e^+e^- → bb^^- Foward-Backward Charge Asymmetery between √<S>=52 and 57 GeV" Physics Review Letters. 63. 2341-2344 (1989)
[Publications] I.H.Park et al.AMY Group: "Experimental Evidence for the Non-Abelian Nature of QCD" Physicsal Review Letters. 62. 1713-1716 (1989)
[Publications] Y.K.Kim et al.AMY Group: "Comparison of Quark and Gluon Jets Produced in High Energy e^+e^- Annihilations" Physicsal Review Letters. 63. 1772-1775 (1989)
[Publications] K.Kinoshita et al.SHIP Group: "Search for Highly Ionizing Particles in e^+e^- Annihilation at √<S>=50-60.8 GeV" Physics Letters. B228. 543-547 (1989)
[Publications] H.Aihara et al.: "Evidence of Soft and Collinear Gluon Emission in e^+e^- Hadronic Events" Z.Phys.C-Particles and Fields. 44. 357-364 (1989)

1989 Fiscal Year Annual Research Report

電子・陽電子衝突実験に於ける次世代測定器の開発研究

Principal Investigator

長島 順清 大阪大学, 理学部, 教授 (90044768)

Research Products

[Publications] Y.Hemmi et al.: "The VENUS Drift Chamber for a Fast Z-Trigger" Nuclear Instruments and Methods in Physics Research. A281. 462-468 (1989)

[Publications] Y.Fukushima et al.: "New Readout Electronics for the VENUS Liquid Argon Calorimeter at TRISTAN" IEEE Transactions on Nuclear Science. 36. 670-674 (1989)

[Publications] Y.Ikegami et al.: "Readout Electronics for the VENUS Muon Drift Tubes at TRISTAN" IEEE Transactions on Nuclear Science. 36. 665-669 (1989)

[Publications] T.Arima et al.: "Radiation Damage of Silicon Junction Photodiodes by Evaporation Neutrons from Nuclear Spallation Reactions with 12 GeV Protons" Japanese Journal of Applied Physics. 28. 1957-1962 (1989)

[Publications] Y.Asano et al.: "Monte Carlo Evaluation of a New Track-Finding Method for the VENUS Muon Detector" Japanese Journal of Applied Physics. 28. 1981-1988 (1989)

[Publications] Y.Doi et al.: "A2 Tesla Superconducting Magnet for the AMY Detector" Nuclear Instrument and Methods in Physics Research. A274. 95-112 (1989)

[Publications] Y.Fukushima et al.: "Current Status of the φ-Factory-A Conceptual study of the Precise Measurement of the CP Violating Paramenter Re(ε'/ε)" KEK Preprint 89-159 Submitted for the publication.

[Publications] T.Tauchi: "Estimation of Beam Backgrounds for the TOPAZ Vertex Chamber" KEK Preprint 89-83 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,Tsukuba,Japan.

[Publications] T.Yamashita et al.: "Measurements of the Electron Drift Velocity and Positive Ion Mobility for Gases Containing CF_4" Nuclear Instrument and Methods in Physics Research. A283. 709-715 (1989)

[Publications] N.Ujiie and M.Ikeda: "CAMAC-Controlled 4-level Discriminator with Four Settable Threshold Levels" Nuclear Instrument and Methods in Physics Research. A281. 335-340 (1989)

[Publications] Y.Mizuno et al.: "Transverse Electron Beam Polarimetry in TRISTAN Main Ring" KEK Preprint 89-141 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989 Tsukuba,Japan.

[Publications] K.Tsuchiya et al.: "Superconducting Quadrupole Magnets for the TRISTAN Low-Beta Insertion" KEK Preprint 89-65 Proc.the IIth Int.Conf.on Magnet Technology,Aug.22-Sep.1,1989,Tsukuba,Japan.

[Publications] H.Fukuma et al.: "A Design of Double Ring Colider in the TRISTAN Tunnel" KEK Preprint 89-13 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] Y.Funakoshi et al.: "Observation of Multibunch Phenomena in TRISTAN Accumulation Ring" KEK Preprint 89-98 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] E.Kikutani et al.: "Measurement of Luminosity in TRISTAN Accumuration Ring" KEK Preprint 89-118 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] N.Ishihara et al.: "A Test Facility of Super-Accurate Alignment System for a Linear Collider" KEK Preprint 89-87 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] M.Suetake et al.: "Damped Cavity for Linear Collider" KEK Preprint 89-164 Proc.7th Symp.on Accelerator Science and Technology,Dec.12-14,1989,Osaka,Japan.

[Publications] J.Urakawa and Linear Collider Study Group: "Timing System of the Accelerator Test Facility for a Linear Collider" KEK preprint 89-175 to be published in Nuclear Instruments and Methods in Physics Research.

[Publications] J.Urakawa et al.: "Cntrol System of the Test Accelerator Facility for a Linear Collider" KEK Preprint 89-105 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] T.Higo et al.: "X-Band Accelerating Structure for Japan Linear Collider" KEK Preprint 89-93 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] H.Mizuno et al.: "X-Band Klystron Diode Test for Japan Linear Collider(JLC)" KEK Preprint 89-114 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] J.Kishiro et al.: "The Microwave Free Electron Laser Test Stand at KEK" KEK Preprint 89-111 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] S.Hiramatsu et al.: "Conceptual Disign of a Linear in the TBA/FEL Regime" KEK Preprint 89-110 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] H.Kurino et al.: "Beam Guiding in the Ion Focused Regime at the KEK FEL Test Stand" KEK Preprint 89-109 Proc.the XIV Int.Conf.on High Energy Accelerators,Aug.22-26,1989,Tsukuba,Japan.

[Publications] K.Abe et al.VENUS Group: "Search for Isolated Photons from Flavot-Changing Neutral-Current Decay of a New Quark at the KEK e^+e^- Collider TRISTAN" Physical Review Letters. 63. 1776-1779 (1989)

[Publications] K.Abe et al.VENUS Group: "Search for Fourth-Generation Quark with |Q|=e/3 on e^+e^- Collisions at √<S>=56-57 GeV" Physical Review. D39. 3524-3527 (1989)

[Publications] K.Abe et al.VENUS Group: "Measurement of the Differential Cross Sections of e^+e^- →γγ and e^+e^-→γγγ at √<S>=55,56,56.5 and 57 GeV and Search for Unstable Photino Pair Production" Zeitschrift fur Physik C-Particles and Fiields. 45. 175-191 (1989)

[Publications] K.Abe et al.VENUS Group: "Study on Single Photon Production at √<S>=54-61.4 GeV" Physics Letters. B232. 431-436 (1989)

[Publications] S.Odaka et al.VENUS Group: "New Limits on Neutral Scalar Bosons" Journal of the Physical Society of Japan. 58. 3037-3041 (1989)

[Publications] K.Abe et al.VENUS Group: "New Limits on Neutral Scalar Bosons" Journal of the Physical Society of Japan. 58. 3037-3041 (1989)

[Publications] K.Abe et al.VENUS Group: "Charge Asymmetry of Hadron Jets and Limits on the Compositenes Scales in the e^+e^-→qq Reaction at 〈√<S>〉=57.6 GeV" Physics Letters. B232. 425-430 (1989)

[Publications] A.Taketani et al.VENUS Group: "Search for SUSY Pertners of Changed Leptons in e^+e^- Collisions with s up to 60.8 GeV" Physics Letters. B234. 202-208 (1990)

[Publications] K.Abe et al.VENUS Group: "Measurement of R and Search for New Quark Flavors Decaying into Multi-Jet Final States in e^+e^- Collisions between 54.0 and 61.4 GeV C.M. Energies" Physics Letters. B234. 382-388 (1990)

[Publications] K.Abe et al.VENUS Group: "Measurement of the Reactions e^+e^-→μ^+μ^- and e^+e^- →γ^+γ^- between √<S>=50 and 60.8 GeV" KEK preprint 89-192 Submitted to Z.Phys.C.

[Publications] K.Abe et al.VENUS Group: "Determination of the QCD Scale Parameter Λ_<MS> with QCD Cascade on the Basis of the Next-to-leading Logarithmic Approximation" Submitted to Physics Letters B.

[Publications] K.Tobimatsu and Y.Shimizu: "Radiative Bhabha Scattering in Special Configurations with Missing Final e^+ and/or e^-" KEK preprint 89-9 Submitted to Comp.Phys.Commun.

[Publications] I.Adachi et al.TOPAZ Group: "A Search for a Fourth-Generation Charge -1/3(b')Quark Using Inclusive Muons in e^+e^- Annihilations at √<S>=56.5-60.8 GeV" Physics Letters. B229. 427-431 (1989)

[Publications] I.Adachi et al.TOPAZ Group: "Measurement of the Total Hadronic Cross Sections in e^+e^- Annihilations and Determination of the Standard Model Parameters" Physics Letters. B234. 525-533 (1990)

[Publications] I.Adachi et al.TOPAZ Group: "A Serch for Excited Leptons in the Energy Region√<S>=52-60.8 GeV" Physics Letters. B228. 553-559 (1990)

[Publications] I.Adachi et al.TOPAZ Group: "Measurements f α_s in e^+e^- Annihilation at √<S>=53.3 GeV59.5 GeV" Physics Letters. B227. 495-500 (1989)

[Publications] I.Adachi et al.TOPAZ Group: "A Study of Pion Pair Production in Two-Photon Process" Physics Letters. B234. 185-190 (1990)

[Publications] I.Adachi et al.TOPAZ Group: "A Search for a b'Quark with Flavor Changing Neutral Current Decay Modes at TRISTAN" Physics Letters. B234. 197-201 (1990)

[Publications] S.Eno et al.AMY Group: "Search for a Foueth-Generation Charge-1/3 Quark" Physics Review Letters. 63. 1910-1913 (1989)

[Publications] E.H.Low et al.AMY Group: "Search for Non-Minimal Higgs Production in e^+e^- Annihilation at √<S>【.simeq】56 GeV" Physics Letters. B228. 548-552 (1989)

[Publications] N.M.Shaw et al.AMY Group: "Search for Unstable Heavy Neutral Leptons in e^+e^- Annihilations at √<S> from 50 to 60.8 GeV" Physics Review Letters. 63. 1342-1345 (1989)

[Publications] A.Bacala et al.AMY Group: "Measurements of Cross Sections and Charged Asymmetries for e^+e^- → γ^+γ^- and e^+e^- →μ^+μ^- for √<S> from 52 to 57 GeV" Physics Letters. B218. 112-118 (1989)

[Publications] T.Mori et al.AMY Group: "Measurements of the e^+e^- Total Hadronic Cross Sections and a Determination of M_z and Λ-_<MS>" Physics Letters. B218. 499-507 (1989)

[Publications] S.K.Kim et al.AMY Group: "Search for the Substructure of Leptons in High Energy QED Processes at TRISTAN" Physics Letters. B223. 476-484 (1989)

[Publications] Y.Sakai et al.AMY Group: "A Search for SUSY particles in e^+e^- Anihilation at √<S>=50-60.8 GeV" To be published in Physics Letters B.

[Publications] H.Sagawa et al.AMY Group: "Measurement of e^+e^- → bb^^- Foward-Backward Charge Asymmetery between √<S>=52 and 57 GeV" Physics Review Letters. 63. 2341-2344 (1989)

[Publications] I.H.Park et al.AMY Group: "Experimental Evidence for the Non-Abelian Nature of QCD" Physicsal Review Letters. 62. 1713-1716 (1989)

[Publications] Y.K.Kim et al.AMY Group: "Comparison of Quark and Gluon Jets Produced in High Energy e^+e^- Annihilations" Physicsal Review Letters. 63. 1772-1775 (1989)

[Publications] K.Kinoshita et al.SHIP Group: "Search for Highly Ionizing Particles in e^+e^- Annihilation at √<S>=50-60.8 GeV" Physics Letters. B228. 543-547 (1989)

[Publications] H.Aihara et al.: "Evidence of Soft and Collinear Gluon Emission in e^+e^- Hadronic Events" Z.Phys.C-Particles and Fields. 44. 357-364 (1989)

長島順清大阪大学, 理学部, 教授 (90044768)