English

Resonance Production at STAR

High Energy Physics - Phenomenology 2017-08-23 v1

Abstract

We present the first measurement of mid-rapidity ϕ\phi vector meson production in Au+AuAu+Au collisions at RHIC (sNN=130\sqrt{s_{_{NN}}} =130 GeV) from the STAR detector. For the 11% most central collisions, the slope parameter from an exponential fit to the transverse mass distribution is T=T=~379±\pm51(stat) ±\pm 45(syst)~MeV, the yield dN/dydN/dy =5.73±=5.73\pm0.37(stat)±\pm 0.57(syst) per event and the ratio Nϕ/NhN_{\phi}/N_{h^-} is found to be 0.021±\pm0.001(stat)±\pm 0.03(syst). We currently place the value of the Nϕ/NKN_{\phi}/N_{K^-} ratio between 0.10 and 0.16. The measured ratios Nϕ/NhN_{\phi}/N_{h^-} and Nϕ/NKN_{\phi}/N_{K^-}, as well as TT for the ϕ\phi meson at mid-rapidity do not change for the selected centrality bins.

Keywords

Cite

@article{arxiv.hep-ph/0112017,
  title  = {Resonance Production at STAR},
  author = {Eugene T. Yamamoto},
  journal= {arXiv preprint arXiv:hep-ph/0112017},
  year   = {2017}
}

Comments

8 pages, 7 figures (in eps) talk given at XXXI International Symposium on Multiparticle Dynamics, Sep. 1-7, 2001, Datong China at http://ismd31.ccnu.edu.cn/

R2 v1 2026-07-22T13:37:57.361Z