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26 April 2024

» arxiv » 1509.4830

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Kaon pair production in proton-nucleus collisions
Yu.T. Kiselev ; M. Hartmann ; A. Polyanskiy ; E.Ya. Paryev ; S. Barsov ; M. Buescher ; S. Dymov ; R. Gebel ; V. Hejny ; A. Kacharava ; I. Keshelashvili ; B. Lorentz ; Y. Maeda ; S. Merzliakov ; S. Mikirtytchiants ; H. Ohm ; V. Serdyuk ; A. Sibirtsev ; V.Y. Sinitsyna ; H.J. Stein ; H. Stroeher ; S. Trusov ; Yu. Valdau ; C. Wilkin ; P. Wuestner ; Q.J. Ye ;
Date:	16 Sep 2015
Abstract:	The production of non-phi K+K- pairs by protons of 2.83 GeV kinetic energy on C, Cu, Ag, and Au targets has been investigated using the COSY-ANKE magnetic spectrometer. The K- momentum dependence of the differential cross section has been measured at small angles over the 0.2--0.9 GeV/c range. The comparison of the data with detailed model calculations indicates an attractive K- -nucleus potential of about -60 MeV at normal nuclear matter density at a mean momentum of 0.5 GeV/c. However, this approach has difficulty in reproducing the smallness of the observed cross sections at low K- momenta.
Source:	arXiv, 1509.4830
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