Search for flavor mixing and new physics with KL→π0νν decay

2008 Fiscal Year Self-evaluation Report

• Project Area: New Developments of Flavor Physics
• Project/Area Number: 18071006
• Research Category: Grant-in-Aid for Scientific Research on Priority Areas
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: YAMANAKA Taku Osaka University, 大学院・理学研究科, 教授 (20243157)
• Project Period (FY): 2006 – 2011
• Keywords: CP対称性の破れ / K中間子 / 大強度陽子加速器 / J-PARC / ビームライン

Research Abstract

本研究の目的は、現在東海村で建設中のJ-PARC大強度陽子加速器を用いて、KL→π0νν崩壊を観測することである。そのために、J-PARCに新しいKLビームラインを建設し、KEKの12GeV陽子加速器を用いたE391a実験の装置を移設し、電磁カロリメータ、ガンマ線検出器、データ収集システムを新たな物に置き換える。

Research Products

• [Journal Article] Search for a Light Pseudoscalar Particle in the Decay KL→π0π0X (2009)
  • Author(s): Y.C. Tung, et al., (62名)
  • Journal Title: Phys. Rev. Lett. 102 Pages: 051802
• [Journal Article] Barrel Photon Detector of the KEK KL→π0ννExperiment (2008)
  • Author(s): Y. Tajima, et al., (49名)
  • Journal Title: Nucl. Inst. Meth. A 592 Pages: 261
• [Journal Article] Search for the Decay KL→π0νν (2008)
  • Author(s): J.K. Ahn, et al. (60名)
  • Journal Title: Phys. Rev. Lett. 100 Pages: 201802
• [Journal Article] First Search for KL→π0π0νν (2007)
  • Author(s): J. Nix, et al., (52名)
  • Journal Title: Phys. Rev. D 76 Pages: 011101(R)
• [Journal Article] New Limit on the KL→π0νν (2006)
  • Author(s): J.K. Ahn, et al., (53名)
  • Journal Title: Phys. Rev. D 74 Pages: 051105(R)
• [Presentation] Reach of Future Kaon Efforts (2008)
  • Author(s): 野村正
  • Organizer: FPCP08
  • Place of Presentation: Taipei
  • Year and Date: 2008-05-09
• [Presentation] Review onε'/ε (2008)
  • Author(s): 山中卓
  • Organizer: FPCP08
  • Place of Presentation: Taipei
  • Year and Date: 2008-05-08
• [Presentation] J-PARC (2007)
  • Author(s): 山中卓
  • Organizer: Workshop on Physics with a High Intensity Proton Source
  • Place of Presentation: Fermilab, Illinois, U.S.A
  • Year and Date: 2007-11-16