STAR中的喷流和类喷流关联
Jets and Jet-like correlations in STAR
摘要：
硬散射部分子在QGP中的传播和修改可以使用各种类型的喷流和类喷流相关测量进行研究。STAR探测器具有全方位角和大的赝快度接受度，以及宽的横向动量（pT）覆盖范围，非常适合这些测量。在中快度，利用带电强子与重构的触发喷注轴的方位角关联，研究了从p+p到Au+Au的喷注形状和相关强子产额的变化.双强子相关背靠背高pT强子对被用来调查dijets和碎裂的偏见。由于飞行时间探测器的增加，STAR的粒子识别能力被用来调查与喷射相关的和与体积相关的粒子生产之间的差异。双强子与确定的触发粒子的关联提供了简单复合理论的实验检验。全面的STAR喷流猝灭测量可以用来进一步限制RHIC部分子能量损失的理论。
英文摘要：
The propagation and modification of hard-scattered partons in the QGP can be studied using various types of jet and jet-like correlation measurements. The STAR detector with its full azimuthal and large pseudorapidity acceptance, as well as its wide transverse momentum (pT) coverage, is well-suited for these measurements. At mid-rapidity, azimuthal correlations of charged hadrons with the axis of a reconstructed trigger jet are used to study the modification of jet shapes and associated hadron yields from p+p to Au+Au. Dihadron correlations with back-to-back high-pT hadron pairs are used to investigate dijets and fragmentation biases. STAR's increased particle identification capabilities due to the Time-Of-Flight detector are utilized to investigate the differences between jet-related and bulk-related particle production. Dihadron correlations with identified trigger particles provide experimental tests of simple recombination theories. The comprehensive set of STAR jet-quenching measurements can be used to further constrain theories of parton energy loss at RHIC.
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