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arXiv 1007.2355nucl-ex
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p+p,d+Au和Au+Au碰撞中重味衰变电子的关联

Correlations of electrons from heavy flavor decay in p+p, d+Au and Au+Au collisions

Anne Sickles

摘要:

在相对论性重离子碰撞中,重味探针对于理解部分子与产生的热核物质之间的相互作用至关重要。p+p碰撞中的测量提供了关于重夸克如何产生和碎裂的信息,而d+Au碰撞中的测量对冷核物质的可能影响很敏感。涉及重味探针的方位角相关测量是对单粒子谱测量的补充,并提供了关于重夸克的产生和相互作用的额外信息。测量带有重味的电子与来自事件的其他强子的衰变可以提供关于重夸克如何与产生的物质相互作用的信息,并且可以与来自轻强子关联的类似测量进行比较。来自重味衰变的电子与μ子之间的相关性,也来自重味衰变,可以提供关于d+Au碰撞中的重味产生和冷核物质效应的进一步信息,具有非常干净的信号。我们目前的PHENIX结果的电子强子的相关性在p+p和Au+Au碰撞和电子μ子的相关性在p+p和d+Au碰撞,并讨论这些测量的影响。

英文摘要:

In relativistic heavy ion collisions heavy flavor probes are crucial to understand the interactions between partons and the produced hot nuclear matter. Measurements in p+p collisions provide information about how the heavy quarks are produced and fragment and in d+Au collisions are sensitive to possible effects from cold nuclear matter. Azimuthal correlation measurements involving heavy flavor probes are complementary to single particle spectra measurements and provide additional information about production and interactions of heavy quarks. Measurements of electrons with heavy flavor decay with other hadrons from the event can provide information about how the heavy quark interacts with the produced matter and can be compared to similar measurements from light hadron correlations. Correlations between electrons from heavy flavor decay with muons, also from heavy flavor decay, can provide further information about heavy flavor production and cold nuclear matter effects in d+Au collisions with a very clean signal. We present PHENIX results for electron-hadron correlations in p+p and Au+Au collisions and electron-muon correlations in p+p and d+Au collisions and discuss the implications of these measurements.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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