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引用次数: 0
摘要
我们报告了在RHIC上的原始光子，中性介子和eta测量。利用STAR时间投影室(STAR Time Projection Chamber, TPC)重构e +e−对产生的γ+Z→e ++e−+Z，探测到了100MeV ~ 4GeV能量范围内的光子。结合光子探测技术，讨论了候选光子的纯度和通过其电磁衰减通道测量强子衰变。确定了π0→γ和η→γ衰变通道。
Photon production in Au+Au collisions at \(\sqrt {s_{NN} } = 130\) GeV
We report raw photon, neutral pion and eta measurements at RHIC. Photons in the energy range from 100MeV − 4GeV were detected by reconstructing e + e − pair production, γ+Z→e ++e −+Z, with the STAR Time Projection Chamber (TPC). Along with the photon detection technique we discuss the purity of the photon candidates and measurements of hadronic decays via their electromagnetic decay channels. The π0→γ and η→γγ decay channels are addressed.
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