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EXA 2011 pp 221-225 | Cite as

Population of the X(2265) resonance in the p + pX + K +  reaction at Tp = 2.5 GeV

  • Ken SuzukiEmail author
  • Paul Kienle
  • Marco Maggiora
  • Toshimitsu Yamazaki
Conference paper

Abstract

DISTO data of p + pp + Λ + K  +  reactions at several beam energies were studied. We found in the missing-mass ΔM(K  + ) spectrum and the Λp invariant-mass spectrum at 2.85 GeV a broad resonance with M = 2267 MeV/c 2 and Γ = 118 MeV, associated with a mono energetic kaon spectrum, indicating that a dibaryonic state (X) with strangeness − 1 is produced in the p + pX + K  +  reaction with X decaying into p + Λ. The energy dependence of the X production rate and the preliminary result of the recently analyzed p + pp + Λ + K  +  data at T p  = 2.5 GeV is presented.

Keywords

\(\bar{K}\) nuclei \(\bar{K}N\) interaction Strange dibaryon 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Ken Suzuki
    • 1
    Email author
  • Paul Kienle
    • 2
  • Marco Maggiora
    • 3
  • Toshimitsu Yamazaki
    • 4
    • 5
  1. 1.Stefan Meyer Institute for Subatomic Physics of the Austrian Academy of SciencesViennaAustria
  2. 2.Excellence Cluster Universe, Technische Universität MünchenGarchingGermany
  3. 3.Dipartimento di Fisica Generale “A. Avogadro” and INFNTorinoItaly
  4. 4.Department of PhysicsUniversity of TokyoTokyoJapan
  5. 5.RIKEN Nishina CenterSaitamaJapan

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