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Dzyuba, A. [Author]; Büscher, M. [Author]; Hartmann, M. [Author]; Keshelashvili, I. [Author]; Koptev, V. [Author]; Maeda, Y. [Author]; Sibirtsev, A. [Author]; Ströher, H. [Author]; Wiklin, C. [Author]

Coupled-channel effects in the pp -> pp K K- reaction

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  • Media type: E-Article
  • Title: Coupled-channel effects in the pp -> pp K K- reaction
  • Contributor: Dzyuba, A. [Author]; Büscher, M. [Author]; Hartmann, M. [Author]; Keshelashvili, I. [Author]; Koptev, V. [Author]; Maeda, Y. [Author]; Sibirtsev, A. [Author]; Ströher, H. [Author]; Wiklin, C. [Author]
  • imprint: North-Holland Publ., 2008
  • Published in: Physics letters / B 668, 315 - 318 (2008). doi:10.1016/j.physletb.2008.08.062
  • Language: English
  • DOI: https://doi.org/10.1016/j.physletb.2008.08.062
  • ISSN: 0370-2693
  • Keywords: magnetic spectrometer: experimental results ; K anti-K: final-state interaction ; p p: inelastic scattering ; cross section: energy dependence ; Juelich COSY PS ; 2.60: 2.75: 2.80 GeV ; Cusp phenomena ; K: pair production ; mass spectrum: (K+ K-) ; p p --> 2p K+ K- ; Final state interactions ; K0 anti-K0: threshold
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  • Description: The cross sections for the pp -> ppK(+)K(-) reaction were measured at three beam energies 2.65, 2.70, and 2.83 GeV at the COSY-ANKE facility. The shape of the K+K- spectrum at low invariant masses largely reflects the importance of K (K) over bar final state interactions. It is shown that these data can be understood in terms of an elastic K+K- rescattering plus a contribution coming from the production of a K-0(K) over bar (0) pair followed by a charge-exchange rescattering. Though the data are not yet sufficient to establish the size of the cusp at the K-0(K) over bar (0) threshold, the low mass behaviour suggests that isospin-zero production is dominant. (C) 2008 Elsevier B.V. All rights reserved.
  • Access State: Open Access