phi-Meson Mass Modification in Heavy-Ion Collisions

Details phi-Meson Mass Modification in Heavy-Ion Collisions phi-Meson Mass Modification in Heavy-Ion Collisions

1997-05-16

arxiv.org/abs/hep-ph/9705332v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, latex, revtex; 2 postscript figures; talk presented at the 3rd International Conference on Physics and Astrophysics o

Scientific paper

We recently presented a method of analyzing invariant-mass spectra of kaon pairs resulting from decay of $\phi$ mesons produced in high-energy heavy-ion collisions. It can be used to extract the shifts in the mass and the width ($\Delta M$ and $\Delta \Gamma$) of the $\phi$ mesons when they are inside the dense matter formed in these collisions. We have now performed a Monte-Carlo simulation of this process. We illustrate our method with the help of available preliminary data. Extracted value of $\Delta M$ is significantly larger than that obtained with an earlier method. Our results are consistent with the experimentally observed $p_T$ dependence of the mass shift.

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