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arXiv · hep-ph/0208161

Phi meson production at RHIC

L. Bravina·L. Csernai·Amand Faessler·C. Fuchs·S. Panitkin·Nu Xu·E. Zabrodin
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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.

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L. Bravina, L. Csernai, Amand Faessler, C. Fuchs, S. Panitkin, Nu Xu, E. Zabrodin. 2002-08-16. Phi meson production at RHIC. https://doi.org/10.1016/s0375-9474(02)01461-6

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