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The European Physical Journal A

, Volume 41, Issue 3, pp 361–368 | Cite as

Searching for signatures around 1920 MeV of a N* state of three hadron nature

  • A. Martínez TorresEmail author
  • K. P. Khemchandani
  • U. -G. Meißner
  • E. Oset
Regular Article - Theoretical Physics

Abstract

We provide a series of arguments which support the idea that the peak seen in the \( \gamma\) p \( \rightarrow\) K + \( \Lambda\) reaction around 1920MeV should correspond to the recently predicted state of J P = 1/2+ as a bound state of K \( \bar{{K}}\) N with a mixture of a 0(980)N and f 0(980)N components. At the same time we propose polarization experiments in that reaction as a further test of the prediction, as well as a study of the total cross-section for \( \gamma\) p \( \rightarrow\) K + K - p at energies close to threshold and of dσ/dM inv for invariant masses close to the two-kaon threshold.

PACS

14.20.Gk Baryon resonances with S = 0 21.45.-v Few-body systems 13.60.Rj Baryon production 

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  • A. Martínez Torres
    • 1
    Email author
  • K. P. Khemchandani
    • 2
  • U. -G. Meißner
    • 3
    • 4
  • E. Oset
    • 1
  1. 1.Departamento de Física Teórica and IFICCentro Mixto Universidad de Valencia-CSIC, Institutos de Investigación de PaternaValenciaSpain
  2. 2.Centro de Física Teórica, Departamento de FísicaUniversidade de CoimbraCoimbraPortugal
  3. 3.Helmholtz-Institut für Strahlen-und Kernphysik and Bethe Center for Theoretical PhysicsUniversität BonnBonnGermany
  4. 4.Institut für KernphysikInstitute for Advanced Simulations and Jülich Center for Hadron Physics, Forschungszentrum JülichJülichGermany

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