학술논문
Kaon pair production in proton-nucleus collisions at 2.83 GeV kinetic energy
Document Type
Working Paper
Author
Kiselev, Yu. T.; Hartmann, M.; Polyanskiy, A.; Paryev, E. Ya.; Barsov, S.; Buescher, M.; Dymov, S.; Gebel, R.; Hejny, V.; Kacharava, A.; Keshelashvili, I.; Lorentz, B.; Maeda, Y.; Merzliakov, S.; Mikirtytchiants, S.; Ohm, H.; Serdyuk, V.; Sibirtsev, A.; Sinitsyna, V. Y.; Stein, H. J.; Stroeher, H.; Trusov, S.; Valdau, Yu.; Wilkin, C.; Wuestner, P.; Ye, Q. J.
Source
Subject
Language
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.
Comment: 7 pages, 5 figures, 1 table
Comment: 7 pages, 5 figures, 1 table