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Automatic computation of higher order corrections

Research Project

Project/Area Number 07044097
Research Category

Grant-in-Aid for international Scientific Research

Allocation TypeSingle-year Grants
SectionJoint Research
Research InstitutionNational Laboratory for High Energy Physics

Principal Investigator

SHIMIZU Yoshimitsu  National Laboratory for High Energy Physics, Professor, 物理研究部, 教授 (20011744)

Co-Investigator(Kenkyū-buntansha) COIGNET Guy Jean  LAPP-Annecy France, Directeur
SAVRIN Victor.I  Moscow University, INP Russia, 原子核研究所(ロシア), 副所長
PERRET-GALLIX Denis  LAPP-Annecy France, Chargede R
AURENCHE Patrick  LAPP-Annecy France, Directeur
KON Tadashi  Seikei University, 工学部, 助手 (90215442)
WATANABE Takashi  Ko-gakuin University, 工学部, 講師 (10222407)
TOBIMATSU Keijiro  Ko-gakuin University, 工学部, 助教授 (40237102)
JIMBO Masato  Tokyo Management College, 経営情報学科, 助教授 (10226392)
ILYIN Vyache  モスクワ大学, 原子核研究所(ロシア), 主任研究員
BOOS Edward  Moscow University, INP Russia, 原子核研究所(ロシア), 主任研究員
TANAKA Hidekazu  Rikkyo University, 理学部, 助教授 (60202173)
MUNEHISA Tomo  Yamanashi University, 工学部, 助教授 (30174254)
KANEKO Toshiaki  Meiji Gakuin University, 一般教育部, 教授 (40177522)
KATO Kiyoshi  Ko-gakuin University, 工学部, 教授 (50152707)
KURODA Masa-aki  Meiji Gakuin University, 一般教育部, 教授 (00170134)
NAKAZAWA Nobuya  Ko-gakuin University, 工学部, 教授 (50100342)
FUJIMOTO Junpei  National Laboratory for High Energy Physics, 物理研究部, 助手 (90202291)
KURIHARA Yoshimasa  National Laboratory for High Energy Physics, 物理研究部, 助手 (50195559)
ISHIKAWA Tadashi  National Laboratory for High Energy Physics, データ処理センター, 助教授 (90184481)
KAWABATA Setsuya  National Laboratory for High Energy Physics, データ処理センター, 教授 (40152996)
DABININ Mikh  モスクワ大学, 原子核研究所(ロシア), 上級研究員
DUBININ Mikhail  Moscow University, INP Russia
PERRETーGALLI  アネシー素粒子物理研究所(フランス), Charge de
DUBININ Mikh  モスクワ大学, 原子核研究所(ロシア), 上級研究員
SAVRIN V.I.  INPーMSU(ロシア), 副所長
PERRETーGALLI デエイニス  LAPP(フランス), Charge de
IYLIN V.A.  INPーMSU(ロシア), 主任研究員
BOOS E.E.  INPーMSU(ロシア), 主任研究員
DUBININ M.N.  INPーMSU(ロシア), 上級研究員
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1996: ¥3,200,000 (Direct Cost: ¥3,200,000)
Fiscal Year 1995: ¥3,200,000 (Direct Cost: ¥3,200,000)
KeywordsStandard Model / Automation in perturbation / Expert system in physics / Feynman amplitude / Loop integral / High-energy electron-positron collison / Higgs particle / Radiative correction in electro-weak theory / 素粒子の標準模型 / 摂動論の自動計算 / 物理のエキスパートシステム / ファインマン振幅 / ループ振幅の積分 / 高エネルギー電子陽電子衝突 / ヒッグス粒子 / 電弱理論の輻射補正 / 電弱理論での輻射補正
Research Abstract

1.In order to study the W-physics at LEP-II,the grc4f package is spawned from GRACE system. Detailed discussions have been held in Europe between Japanese members, French-side collaborators and LEP experimentalists. Cross-check of the results is done with collaborating members in Moscow State Univ.
2.Caculation of the cross sections for the 4-fermions and a photon, and that for 6-fermions can be realized for some cases in electron-positron annihilation.
3.GRACE system is extended into the super-symmetric model. The self-test by gauge invariance in implemented.
4.The library for loop intergral in one-loop has been developed. Extension to five-point function is done by reduction method.
5.Automated system for one-loop processes becomes well-developed. For two-to-two processes the system works precisely for various channels. Among them, detailed comparison with analytic calculation is done for e^+e^-*W^+W^-. Further, e^+e^-*Wmunu process is studied.
6.Collaborating work with Polish group is done, and the package produced by GRACE is installed into their radiative correction program, KORALW.
7.Parallel computing is a good candidate to accelerate huge computations studied in this project. The research for PVM system has shown that it can be possible.
8.Numerical method for two-loop functions is invetigated and it can calculate up to the non-planer vertex functions.
9.As an example of automated system in two-loop, the electro-weak correction to the anomalous magnetic moment of muon is studied.
10.For the QCD jets in photon-photon reaction an event generator, GGPS,has been developed.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (45 results)

All Other

All Publications (45 results)

  • [Publications] Y.Shimizu et.al.: "Top Quark Production in the Reaction e^+e^-*e^-nuetb at Linear Collider Energies" Z.Phys.C70. 255-262 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Kunehisa et al.: "A parton shower model for hadronic two-photon process in e^+e^- scatfering" Z.Phys.C70. 655-660 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Kurihara et al.: "Hard photon distributions in e^+e^- annihilation process by QEDPS" Prog.Theor.Phys.96. 1223-1235 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Kurihara et al.: "Probing the H^3 vertex in e^+e^- , gammae and gammagamma collisions for light and intermediate Higgs bosons" Phys.Rev.D54. 6717-6727 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.Fujimoto et al.: "grc 4f v1.1 : a faur fermion event generator for e^+e^- collisions" Compt.Phys.Commun.100. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kawabata et al.: "PVM-GRACE" Proceedings of Euro PVM'96 (Lecure wotes in Computer Science). 1156. 335 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Kon et al.: "Impact of Squark pair decay modes on seaveh for supersymmetric neutral Higgs Boson" Phys.Lett.B389. 538-544 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Kon et al.: "Event generators for discovery Physics" Physics at LEP2. 2. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Kon et al.: "Is a high P^T muon of the e^+p*mu^+X event observed at HERA a signature of the stop?" Phys.Lett.B376. 227-231 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Munehisa et al.: "QCD Event Generators" Physics at LEP2. 2. (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Kurihara et al.: "Four-quark final state in W-pair production : Case of signal and background" CERN-TH 197-11. (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Jimbo et al.: "Automatic Calculation of SOSY-Particle Production" Proceedings of Xth Int.Workshop on High Energy Physics and Quantum Field Theory. 1. 155-161 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.Fujimoto et al.: "Numerical Approach foward Automation of Loop Ameplitucle" Proceedings of Xth Int.Workshop on High Energy Physics and Quantum Field Theory. 1. 162-166 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Kurihara et al.: "WW cross-sections and disfributions" Physics at LEP2. 1. 81-139 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] J.Fujimoto et al.: "Standard Model Processes" Physics at LEP2. 1. 207-248 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Shimizu et al.: "gammagamma Physics" Physics at LEP2. 1. 291-348 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] M.Kuroda: "Effective Lagrangian description of Top Production and decay" Phys.Rev.D54. 6861-6882 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Y.Shimizu et al: "Top Quark Production in the Reaction e^+e^-→e^-v^-_etb^^- at Linear Collrcher Energies" Z.Phys.C70. 255-262 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Munehisa et al.: "A parton shower model for hadronic two-photon process in e^+e^- scattering" Z.Phys.C70. 655-660 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Kurihara et al: "Hard Photon Distributions in e^+e^- cunnihilation process by QEDPS" Prog.Theor.Phys.96. 1223-1235 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Kurihara et al.: "Probing the H^3 vertex in e^+e^-,γe and γγ collisiuns for light and intermediate Higgs bosons" Phys.Rev.D54. 6717-6727 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Fujimoto et al: "grc4f vl.1 : a four feunion event generatv for e^+e^- collisions" Compt.Phy.Commun.100. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Kawabata et al: "PVM-GRACE" Procesdings of Euro PVM'96 (hecture Notes in Computer Science). 1156. 335- (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Jimbo et al: "Automatic calculation of SUSY-Particle Production" Proceedings of Xth Int.Wcrkshop on High Energy Physics and Quantun Field Theory. 1. 155-161 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Fujimoto et al: "Numerical Appraach toword Automation of Loop Amplitudes" Proceedings of Xth Int.Workshop on High Energy Physics and Quantun Field Theory. 1. 162-166 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Kurihara et al: "WW cross-sections and distributions" Physics at LEP2. 1. 81-139 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.Fujimoto et al: "Standard Model Processes" Physics at LEP2. 1. 207-248 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Shimizu et al: "γγ Physics" Physics at LEP2. 1. 291-348 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] M.Kuroda: "Effective Lagrangian desoiption of Top production and deccuy" Phys.Rev.D54. 6861-6882 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Kon et al: "Impact of Squark pair decay modls on search for supersymmetric nentral Higgs bosons" Phys.Lett.B389. 538-544 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Kon et al: "Event generatcrs for discovery Physics" Physics at LEP2. 2. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Kon et al: "Is a high P^+ muon of the e^+p→μ^+x event observed at HERA a signature of the stop?" Phys.Lett.B376. 227-231 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Munehisa et al: "QCD Event Generatcrs" Physics at LEP2. 2. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Kurihara et al: "Four-quark final state in W-pcur production : Case of signal and background" CERN-TH/97-11. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Munehisa et al.: "Improved QEDPS for Radiative Corrections in e^+e^- Annihilation" Prog.Theor.Phys. (掲載決定).

    • Related Report
      1995 Annual Research Report
  • [Publications] J.FUJIMOTO et al.: "Numerical Approach to two loop three point functions" Intl.Journal of Mod.Phys.C6. 525-530 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Kaneko: "A Feynman-graph generator for any order of couplimg constants" Comp.Phys.Commun.92. 127-152 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Y.Kurihava et al.: "e^+e^-→e^-veud from LEP to linear collider energies" Phys.Letters. B349. 367-374 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Kuroda: "Refined analysis of the electroweak precision data" Nucl.Phys.B448. 3-29 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Kawabata: "A New Version of the Multidimensional Integration and Event generation package BASES/SPRING" Comp.Phys.Commun.88. 309-326 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Kaneko et al.: "Automatic Calculation of Two Loop Weak corrections to Muon Anomalous Magnetic Manert" Proceedings of the fourth International Workshop on Software Engineering,Artificial Intelligence and Expert Systems for High Energy and Nuclear Physics. 1. (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Jimbo et al.: "A system for the Automatic computation of Cross-Sections Including SUSY Particle" Proceedings of the fourth International Workshop on Software Engineering,Artificial Intelligence and Expert Systems for High Energy and Nuclear Physics. 1. (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Kon et al.: "Light Scalar Top And HEVY Top Signature at CDF" Phys.Rev.D50. 6005-6008 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] S.Kawabata: "An interactive version of GRACE and cataloque of e^+e^- interactions as its application" Proceedings of the Fifth Workshop on Japan Linear Collider (JLC). 1. 92-97 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] M.Jimbo: "The GRACE system for SUSY Processes" Proceedings of the Fifth Workshop on Japan Linear Collider (JLC). 1. 98-107 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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