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Few-Body Systems

, Volume 54, Issue 7–10, pp 1191–1194 | Cite as

J-PARC E27 Experiment to Search for a Nuclear Kaon Bound State K pp

  • Y. IchikawaEmail author
  • H. C. Bhang
  • S. Bufalino
  • H. Ekawa
  • P. Evtoukhovitch
  • A. Feliciello
  • H. Fujioka
  • S. Hasegawa
  • S. Hayakawa
  • R. Honda
  • K. Hosomi
  • K. Imai
  • S. Ishimoto
  • C. W. Joo
  • S. Kanatsuki
  • R. Kiuchi
  • T. Koike
  • H. Kumawat
  • Y. Matsumoto
  • K. Miwa
  • M. Moritsu
  • T. Nagae
  • M. Naruki
  • M. Niiyama
  • Y. Nozawa
  • R. Ota
  • A. Sakaguchi
  • H. Sako
  • V. Samoilov
  • S. Sato
  • K. Shirotori
  • H. Sugimura
  • S. Suzuki
  • T. Takahashi
  • T. N. Takahashi
  • H. Tamura
  • T. Tanaka
  • K. Tanida
  • A. O. Tokiyasu
  • Z. Tsamalaidze
  • B. J. Roy
  • M. Ukai
  • T. O. Yamamoto
  • S. B. Yang
Article

Abstract

In the J-PARC E27 experiment, we search for a K pp bound state via the d(π +, K +) reaction at 1.7 GeV/c at the K1.8 beam line. The binding energy and decay width of the K pp bound state can be obtained in the missing mass measurement with a good energy resolution of 2 MeV/c 2. A range counter array (RCA) was constructed to detect the two high-momentum protons from the K pp decay and to reduce the background such as quasi-free hyperon production. Recently, we have carried out a pilot run in June, 2012. The d(π +, K +) missing-mass spectrum has been obtained for the first time. In this report, an overview of the E27 experiment and a preliminary result on this pilot run are presented.

Keywords

Decay Width Quasibound State Miss Mass Spectrum Japan Proton Accelerator Research Complex Kaon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2013

Authors and Affiliations

  • Y. Ichikawa
    • 1
    • 2
    Email author
  • H. C. Bhang
    • 3
  • S. Bufalino
    • 4
  • H. Ekawa
    • 1
  • P. Evtoukhovitch
    • 5
  • A. Feliciello
    • 4
  • H. Fujioka
    • 1
  • S. Hasegawa
    • 2
  • S. Hayakawa
    • 6
  • R. Honda
    • 7
  • K. Hosomi
    • 7
  • K. Imai
    • 2
  • S. Ishimoto
    • 8
  • C. W. Joo
    • 3
  • S. Kanatsuki
    • 1
  • R. Kiuchi
    • 3
  • T. Koike
    • 7
  • H. Kumawat
    • 9
  • Y. Matsumoto
    • 7
  • K. Miwa
    • 7
  • M. Moritsu
    • 1
  • T. Nagae
    • 1
  • M. Naruki
    • 8
  • M. Niiyama
    • 1
  • Y. Nozawa
    • 1
  • R. Ota
    • 6
  • A. Sakaguchi
    • 6
  • H. Sako
    • 2
  • V. Samoilov
    • 5
  • S. Sato
    • 2
  • K. Shirotori
    • 10
  • H. Sugimura
    • 1
    • 2
  • S. Suzuki
    • 8
  • T. Takahashi
    • 8
  • T. N. Takahashi
    • 11
  • H. Tamura
    • 7
  • T. Tanaka
    • 6
  • K. Tanida
    • 3
  • A. O. Tokiyasu
    • 1
  • Z. Tsamalaidze
    • 5
  • B. J. Roy
    • 9
  • M. Ukai
    • 7
  • T. O. Yamamoto
    • 7
  • S. B. Yang
    • 3
  1. 1.Department of PhysicsKyoto UniversityKyotoJapan
  2. 2.ASRC, Japan Atomic Energy AgencyIbarakiJapan
  3. 3.Department of Physics and AstronomySeoul National UniversitySeoulKorea
  4. 4.INFN, Istituto Nazionale di Fisica NucleareTorinoItaly
  5. 5.Joint Institute for Nuclear ResearchMoscow RegionRussia
  6. 6.Department of PhysicsOsaka UniversityToyonakaJapan
  7. 7.Department of PhysicsTohoku UniversitySendaiJapan
  8. 8.High Energy Accelerator Research Organization (KEK)TsukubaJapan
  9. 9.Nuclear Physics DivisionBhabha Atomic Research CentreMumbaiIndia
  10. 10.Research Center for Nuclear PhysicsOsakaJapan
  11. 11.RIKENSaitamaJapan

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