Phi meson production at RHIC
Abstract
The production of phi mesons in Au+Au collisions at RHIC and their propagation in a hot and dense nuclear medium is studied within the microscopic quark-gluon string model. The inverse slope parameter of the transverse mass distribution agrees well with that extracted from the STAR data, while the absolute yield of phi is underestimated by a factor 2. It appears that the fusion of strings alone cannot increase the phi yield either. Less than 30% of detectable phi's experience elastic scattering, this rate is insufficient for the full thermalization of phi. The directed flow of phi at |y|<2 demonstrates strong antiflow behavior, whereas its elliptic flow rises up to about 3.5% in the same rapidity interval. As a function of transverse momentum it rises linearly with increasing p_t, in agreement with the STAR data, and saturates at p_t > 2 GeV/c.
Cite
@article{arxiv.hep-ph/0208161,
title = {Phi meson production at RHIC},
author = {L. Bravina and L. Csernai and Amand Faessler and C. Fuchs and S. Panitkin and Nu Xu and E. Zabrodin},
journal= {arXiv preprint arXiv:hep-ph/0208161},
year = {2009}
}
Comments
Talk at Quark Matter'02, 4 pages incl. 5 eps-figures