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arXiv · 1509.04830

Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy

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
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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.

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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. 2015-09-16. Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy. https://doi.org/10.1103/physrevc.92.065201

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