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Measurement of the life-time of Kπatom and its Lamb-shift-Test of QCD in the non-perturvative region by extended DIRAC experiment

Research Project

Project/Area Number 21540306
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 InstitutionKyoto Sangyo University

Principal Investigator

TAKEUTCHI Fujio  京都産業大学, 名誉教授 (40121537)

Co-Investigator(Kenkyū-buntansha) OKADA Kenji  京都産業大学, コンピュータ理工学部, 教授 (90093385)
CHIBA Masami  首都大学東京, 理工学研究科, 助教 (60128577)
KOBAYASHI Masaaki  大学共同利用機関法人高エネルギー加速器研究機構, 名誉教授 (40013388)
IWASHITA Yoshihisa  京都大学, 化学研究所, 准教授 (00144387)
AOGAKI Sohichiroh  京都産業大学, コンピュータ理工学部, 講師 (00582363)
Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsDIRAC実験 / π^-π^+原子 / Kπ原子 / ハドロニック原子 / CERN PS / 非摂動領域でのQCDの検証 / シンチレーティングファイバーホドスコープ / トポロジカルトリガーデバイス / 於非摂動領域QCD検証
Research Abstract

The main aim of the study is to execute the DIRAC experiment at CERN PS, measure directly the life times ofππand Kπhadronic atoms, and deduce the scattering lengths ofππandπK pairs. A comparison of those values with those calculated with a high precision by the chiral perturbation theory should allow us to make a test of QCD in the non-perturvative region. Also we aim at the extension of the study in order to investigate the excited states ofππand Kπhadronic atoms, and measure the Lamb shifts.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (11 results)

All 2011 2010 2009 Other

All Journal Article (7 results) (of which Peer Reviewed: 5 results) Presentation (1 results) Remarks (3 results)

  • [Journal Article] Determination ofππscattering lengths from measurement ofπ^+π^-atom lifetime2011

    • Author(s)
      B. Adeva, M. Chiba, M. Kobayashi, K. Okada, F. Takeutchi, et al.
    • Journal Title

      Physics Letters

      Volume: B704 Pages: 24-24

    • Related Report
      2011 Final Research Report
  • [Journal Article] Determination ofππscattering lengths from measurement ofπ^+π^-atom lifetime2011

    • Author(s)
      B. Adeva, M. Chiba(9番目), M. Kobayashi(36番目), K. Okada(59番目), F. Takeutchi(80番目), (他90名)
    • Journal Title

      Phys. Lett

      Volume: B704 Issue: 1-2 Pages: 24-29

    • DOI

      10.1016/j.physletb.2011.08.074

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of 0.511 MeV g-rays with a thin long strip of Gd_2SiO_5:Ce^<3+> scintillator2010

    • Author(s)
      S.Aogaki, S.Isogai, M.Kobayashi, S.Sugimoto, F.Takeutchi, Y.Tamagawa
    • Journal Title

      Nuclear Inst.and Methods in Physics Research, A

      Volume: 614 Pages: 250-259

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Performance of a 511keV gamma-ray imager using a LYSO (Ce) crystal array with wave-length shifter2010

    • Author(s)
      Souichirou Aogaki, Fujio Takeutchi
    • Journal Title

      IEEE trans.Nucl.Sci.

      Volume: 57 Pages: 1502-1511

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Measurement of 0.511MeV g-rays with a thin long strip of Gd_2SiO_5 : Ce^<3+> scintillator2010

    • Author(s)
      S.Aogaki, S.Isogai, M.Kobayashi, S.Sugimoto, F.Takeutchi, Y.Tamagawa
    • Journal Title

      Nuclear Inst. and Methods in Physics Research, A (to be published)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Performance of a 511keV gamma-ray imager using a LYSO(Ce)crystal array with wave-length shifter2010

    • Author(s)
      Souichirou Aogaki, Fujio Takeutchi
    • Journal Title

      IEEE trans. Nucl. Sci. (to be published)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Evidence for pi-K atoms with DIRAC2009

    • Author(s)
      B. Adeva, M. Chiba, M. Kobayashi, K. Okada, F. Takeutchi, et al.
    • Journal Title

      Physics Letters

      Volume: B674 Pages: 11-16

    • Related Report
      2011 Final Research Report
  • [Presentation] Performance of a 511keV gamma-ray imager using a LYSO(Ce)crystal array with wave-length shifter2009

    • Author(s)
      S.Aogaki, F.Takeutchi
    • Organizer
      10th International Conference on Inorganic Scintillators and their Applications
    • Place of Presentation
      Jesu, Korea
    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://dirac.web.cern.ch/DIRAC/

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://dirac.web.cern.ch/DIRAC/

    • Related Report
      2011 Annual Research Report
  • [Remarks]

    • URL

      http://dirac.web.cern.ch/DIRAC/

    • Related Report
      2010 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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