Momentum dependence of the phi-meson nuclear transparency
Nuclear Experiment
2015-06-03 v1
Abstract
The production of phi mesons in proton collisions with C, Cu, Ag, and Au targets has been studied via the phi -> K+K- decay at an incident beam energy of 2.83 GeV using the ANKE detector system at COSY. For the first time, the momentum dependence of the nuclear transparency ratio, the in-medium phi width, and the differential cross section for phi meson production at forward angles have been determined for these targets over the momentum range of 0.6 - 1.6 GeV/c. There are indications of a significant momentum dependence in the value of the extracted phi width, which corresponds to an effective phi-N absorption cross section in the range of 14 - 21 mb.
Keywords
Cite
@article{arxiv.1201.3517,
title = {Momentum dependence of the phi-meson nuclear transparency},
author = {M. Hartmann and Yu. T. Kiselev and A. Polyanskiy and E. Ya. Paryev and M. Buescher and D. Chiladze and S. Dymov and A. Dzyuba and R. Gebel and V. Hejny and B. Kaempfer and I. Keshelashvili and V. Koptev and B. Lorentz and Y. Maeda and V. K. Magas and S. Merzliakov and S. Mikirtytchiants and M. Nekipelov and H. Ohm and L. Roca and H. Schade and V. Serdyuk and A. Sibirtsev and V. Y. Sinitsyna and H. J. Stein and H. Stroeher and S. Trusov and Yu. Valdau and C. Wilkin and P. Wuestner and Q. J. Ye},
journal= {arXiv preprint arXiv:1201.3517},
year = {2015}
}
Comments
9 pages, 5 figures