中文

Resonance Studies at STAR

核实验 2014-11-18 v2

摘要

We report on the observed signals of K0(892)πK{K^{\star0}(892)}\to\pi K and ϕ(1020)K+K\phi(1020)\to K^{+}K^{-} using the mixed-event method with powerful statistics from the large acceptance and highly efficient STAR TPC. Preliminary results from the first observation of such states from the year-one STAR data in sNN=130\sqrt{s_{NN}}=130 GeV Au-Au collisions are presented. The K0/hK^{\star0}/h^{-} ratios with an assumed K0K^{\star0} pTp_{T} inverse slope of 300MeV are compatible with that from pp at ISR. For 14% central Au+Au collisions, we observe K0/h=0.060±0.007(stat)K^{\star0}/h^{-}=0.060\pm0.007(stat) and K0ˉ/h=0.058±0.007(stat)\bar{K^{\star0}}/h^{-}=0.058\pm0.007(stat). We show that Λˉ/Λ=0.77±0.07(stat)\bar{\Lambda}/\Lambda=0.77\pm0.07(stat) from this method is consistent with the measurement via decay topology.

关键词

引用

@article{arxiv.nucl-ex/0104001,
  title  = {Resonance Studies at STAR},
  author = {Zhangbu Xu and the STAR Collaboration},
  journal= {arXiv preprint arXiv:nucl-ex/0104001},
  year   = {2014}
}

备注

4 pages, 4 figures, Quark Matter 2001, contributed talk; typos of K*/h- numbers in abstract fixed