• Media type: E-Article
  • Title: Production of K^{+}K^{−} pairs in proton-proton collisions at 2.83 GeV
  • Contributor: Ye, Q. [Author]; Hartmann, Michael [Author]; Hejny, Volker [Author]; Kacharava, Andro [Author]; Keshelashvili, I. [Author]; Kiselev, Yu. [Author]; Khoukaz, A. [Author]; Koptev, V. [Author]; Kulessa, B. [Author]; Kulikov, A. [Author]; Lorentz, Bernd [Author]; Mersmann, T. [Author]; Maeda, Y. [Author]; Merzliakov, Sergey [Author]; Mikirtytchiants, Sergey [Author]; Nekipelov, M. E. [Author]; Ohm, Henner [Author]; Paryev, E. [Author]; Polyanskiy, A. [Author]; Serdyuk, V. [Author]; Stein, Hans-Joachim [Author]; Stroeher, Hans [Author]; Trusov, S. [Author]; Barsov, S. [Author]; [...]
  • imprint: Inst., 2012
  • Published in: Physical review / C 85(3), 035211 (2012). doi:10.1103/PhysRevC.85.035211
  • Language: English
  • DOI: https://doi.org/10.1103/PhysRevC.85.035211
  • ISSN: 0556-2813; 1089-490X
  • Keywords: 2.83 GeV ; ANKE ; K: pair production ; p p --> 2p K+ K- ; p p: exclusive reaction ; Juelich COSY PS ; final-state interaction ; experimental results ; p p --> Phi(1020) 2p ; channel cross section: measured ; differential cross section: measured ; partial wave ; Phi(1020): hadroproduction ; energy dependence
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  • Description: Differential and total cross sections for the pp -> ppK+K- reaction have been measured at a proton beam energy of 2.83 GeV using the COSY-ANKE magnetic spectrometer. Detailed model descriptions fitted to a variety of one-dimensional distributions permit the separation of the pp -> pp phi cross section from that of non-phi production. The differential spectra show that higher partial waves represent the majority of the pp -> pp phi total cross section at an excess energy of 76 MeV, whose energy dependence would then seem to require some s-wave phi-p enhancement near threshold. The non-phi data can be described in terms of the combined effects of two-body final state interactions using the same effective scattering parameters determined from lower energy data.
  • Access State: Open Access