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arXiv 0907.2816hep-ex
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STAR重口味结果

STAR heavy-flavor results

Jaroslav Bielcik

摘要:

总结了STAR实验的重口味结果。开放重味以及夸克偶素测量。在200 GeV的Au+Au中心碰撞中,观察到重味非光子电子的强烈抑制.从实验数据中提取了底贡献对p+p碰撞非光子电子谱的相对贡献。高pT下J/Psi介子的核修正因子与200 GeV中心Cu+Cu碰撞中的一致。在200 GeV的d+Au碰撞中,观测到了Uppersonal(1 S +2S+3S)态的强信号。

英文摘要:

A summary of the heavy flavor results from the STAR experiment is presented. Both open heavy flavor as well as quarkonia measurements are presented. A strong suppression of heavy flavor non-photonic electrons is observed in central Au+Au collisions at 200GeV. Relative contribution of bottom contribution to non-photonic electron spectra in p+p collisions is extracted from data. Nuclear modification factor of J/Psi mesons at high-pT is found to be consistent with one in central Cu+Cu collisions at 200GeV. Strong signal of Upsilon(1S+2S+3S) state is observed in d+Au collisions at 200GeV.

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