Measurement of the in-medium phi-meson width in proton-nucleus collisions
Nuclear Experiment
2011-01-27 v1 High Energy Physics - Experiment
Nuclear Theory
Abstract
The production of phi mesons in the collisions of 2.83 GeV protons with C, Cu, Ag, and Au at forward angles has been measured via the phi -> K+K- decay using the COSY-ANKE magnetic spectrometer. The phi meson production cross section follows a target mass dependence of A^0.56+/-0.02 in the momentum region of 0.6-1.6 GeV/c. The comparison of the data with model calculations suggests that the in-medium phi width is about an order of magnitude larger than its free value.
Keywords
Cite
@article{arxiv.1008.0232,
title = {Measurement of the in-medium phi-meson width in proton-nucleus collisions},
author = {A. Polyanskiy and M. Hartmann and Yu. T. Kiselev 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 S. Merzliakov and S. Mikirtytchiants and M. Nekipelov and H. Ohm and H. Schade and V. Serdyuk and A. Sibirtsev and H. J. Stein and H. Stroeher and S. Trusov and Yu. Valdau and C. Wilkin and P. Wuestner},
journal= {arXiv preprint arXiv:1008.0232},
year = {2011}
}
Comments
8 pages with 2 eps figures