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Study of precise measurements of Higgs in linear collider

Research Project

Project/Area Number 17540283
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

ISHIKAWA Tadashi  High Energy Accelerator Research Organizatio, Computing Research Center, Associate Professor, 計算科学センター, 助教授 (90184481)

Co-Investigator(Kenkyū-buntansha) FUJIMOTO Junpei  High energy accelerator research organization, Institute of Particle and Nuclear Studies, Associate Lecturer, 素粒子原子核研究所, 研究機関講師 (90202291)
KURIHARA Yoshimasa  High energy accelerator research organization, Institute of Particle and Nuclear Studies, Associate Lecturer, 素粒子原子核研究所, 研究機関講師 (50195559)
KATO Kiyoshi  Kogakuin Univ., dep.of Technogoly, Professor, 工学部, 教授 (50152707)
YAMASHITA Satoru  Tokyo Univ., International Center for Elementary Physics Particle, Associate Professor, 素粒子物理国際研究センター, 助教授 (60272465)
YASUI Yoshiaki  Tokyo Management College, Lecturer, 経営情報学科, 講師 (50389839)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2006: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2005: ¥1,800,000 (Direct Cost: ¥1,800,000)
Keywordslinear collider / Higgs particle / radiative corrections / multi-precision / supersymmetry / simulation / algorithm / automatic system / 高精密計算 / 国際貢献 / 高精度計算
Research Abstract

1. One of the most important goals of the International Linear Collider experiments is the detailed study of Higss particle. With the high-statistics data from devoted efforts by experimentalists, precise theoretical calculations are mandatory. We calculated the full electroweak radiative corrections for Higgs potential in the high energy region using the automated system (GRACE) for the perturbative computation. The calculated weak correction in Gμ scheme is small, less than 5% for > 600GeV. In order to confirm the results, we have made the comparison between ZHH channel and vμvμHH channel, and also the estimation of the weak correction by assuming the dominance of W W -> HH mechanism.
2. We present the renormalization scheme used in and the characteristic features of GRACE/SUSY-loop, the package of the program for the automatic calculation of the minimal supersymmetric standard model processes including one-loop order corrections. The two-body and three-body decay widths of charginos in one-loop order evaluated by GRACE/SUSY-loop are shown.
3. The control of the numerical precision of large-scale computations like those generated by the GRACE system for automatic Feynman diagram calculations has become an instrinsic part of those packages. We tested the 1-loop radiative correction to electron positron tau anti-tau production in electon positron collider, using quadruple and octuple precision arithmetic library where the number of lost-bits is made available.
4. We developed the program which generated FORM sources for its symbolic manipulation. This enables us the efficient memory management that is essential for the handling of a tremendous number of Feynman diagrams, so that the performance is significantly improved.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (19 results)

All 2007 2006

All Journal Article (19 results)

  • [Journal Article] 素粒子反応計算の自動化2007

    • Author(s)
      栗原良将他
    • Journal Title

      日本物理学会誌 62

      Pages: 320-320

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Two-body and three-body decays of charginos in one-loop order in the MSSM2007

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Phys. Rev. D 75

      Pages: 113002-113002

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] SORYUSHI HANNO NO JIDOKA2007

    • Author(s)
      Y.Kurihara
    • Journal Title

      NIHON BUTURI GAKKAISHI vol.62

      Pages: 320-320

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Two-body and three-body decays of charginos in one-loop order in the MSSM2007

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Phys. Rev. D75

      Pages: 113002-113002

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 素粒子反応計算の自動化2007

    • Author(s)
      栗原良将 他
    • Journal Title

      日本物理学会誌 5月号

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Radiative corrections for Higgs study at the ILC2006

    • Author(s)
      K.Kato et al.
    • Journal Title

      Pos HEP2005

      Pages: 312-312

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Numerical precision control and GRACE2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nuclear Instruments Methods in Physics Research 559

      Pages: 269-269

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] New results from GRACE/SUSY at 1-loop2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. 157

      Pages: 157-157

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] GRACE with FORM2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. 160

      Pages: 150-150

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Radiative corrections for Higgs study at the ILC2006

    • Author(s)
      K.Kato
    • Journal Title

      PoS(HEP2005) 312

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Numerical precision control and GRACE2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nuclear Instruments Methods in Physics Research vol.559

      Pages: 269-269

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] New results from GRACE/SUSY at 1-loop2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. vol.157

      Pages: 157-157

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] GRACE with FORM2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nucl. Phys. Proc. Suppl. vol.160

      Pages: 150-150

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] New Result from GRACE/SUSY at 1-loop2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nuclear Physics B Supplement 157

      Pages: 157-157

    • Related Report
      2006 Annual Research Report
  • [Journal Article] NLO-QCD Calculation in GRACE2006

    • Author(s)
      Y.Kurihara et al.
    • Journal Title

      Nuclear Physics B Supplement 157

      Pages: 231-231

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Radiative corrections for Higgs study at the ILC2006

    • Author(s)
      K.Kato et al.
    • Journal Title

      EPS Int. Europhysics Conference on High Energy Physics Pos HEP2005

      Pages: 312-312

    • Related Report
      2006 Annual Research Report
  • [Journal Article] New Result from GRACE/SUSY at 1-loop2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nuclear Physics B Supplement (To be appeared)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Numerical precision control and GRACE2006

    • Author(s)
      J.Fujimoto et al.
    • Journal Title

      Nuclear Instruments Methods in Physics Research A 559

      Pages: 269-269

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Electroweak corrections for the study of the Higgs potential at the LC2006

    • Author(s)
      F.Boudiema et al.
    • Journal Title

      Proceedings of 2005 International Linear Coillider Workshop (To be appeared)

    • Related Report
      2005 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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