arXiv:1109.0176·v1·Nuclear Experiment
Comparison of inclusive K+ production in proton-proton and proton-neutron collisions
Yu. Valdau🇷🇺 · V. Koptev🇷🇺 · S. Barsov🇷🇺 · M. Buescher🇩🇪 · A. Dzyuba🇷🇺 · M. Hartmann🇩🇪 · A. Kacharava🇩🇪 · I. Keshelashvili🇨🇭 · A. Khoukaz🇩🇪 · S. Mikirtychiants🇷🇺 · M. Nekipelov🇩🇪 · A. Polyanskiy🇩🇪
Abstract
The momentum spectra of K+ produced at small angles in proton-proton and proton-deuteron collisions have been measured at four beam energies, 1.826, 1.920, 2.020, and 2.650 GeV, using the ANKE spectrometer at COSY-Juelich. After making corrections for Fermi motion and shadowing, the data indicate that K+ production near threshold is stronger in pp- than in pn-induced reactions. However, most of this difference could be made up by the unobserved K0 production in the pn case.
Comments: 6 pages, 4 figures, Submitted to PRC