arXiv 1012.50082010-12-22nucl-exhep-ex

RHIC p-p碰撞中喷流和潜在事件的测量

Jet & Underlying Event Measurements in p-p collisions at RHIC

Helen Caines

备注：: 4 pages, Proceedings of Hard Probes 2010 Conference
DOI：: 10.1016/j.nuclphysa.2011.02.084

摘要：

强子-强子碰撞的物理过程非常复杂，涉及到微扰和非微扰QCD。因此，必须尽可能详细地研究p-p碰撞，以提供各种各样的数据，从而可以检验各种理论计算。例如，直接喷流测量有助于解决碎裂过程的基本问题。这些测量结果形成了一个关键的基线，从重离子研究的结果进行比较，预计由于高${Q^2}$散射部分子与热和稠密介质的相互作用的碎片功能的修改。最后，更深入地了解束-束残余、多部分子相互作用以及初态和终态辐射如何结合在一起产生在潜在事件中观察到的粒子也很重要。在这次演讲中，我们提出了在RHIC的STAR实验测量的200 GeV碰撞的p-p碰撞中的喷流产生和潜在事件的结果。

英文摘要：

The physics of hadron-hadron collisions is very complex involving both perturbative and non-perturbative QCD. It is therefore imperative to study p-p collisions in as much detail as possible to provide a wide variety of data against which the various theoretical calculations can be tested. Direct jet measurements, for instance, help address fundamental questions of the fragmentation process. These measurements form a critical baseline for comparisons of results from heavy-ion studies, where modifications of the fragmentation functions are expected due to interactions of the high ${Q^2}$ scattered partons with the hot and dense medium. Finally, it is also important to gain a deeper understanding of how the beam-beam remnants, multi-parton interactions and initial- and final-state radiation combine to produce the particles observed in the underlying event. In this talk we present results on jet production and the underlying event in p-p collisions at 200 GeV collisions as measured by the STAR experiment at RHIC.

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英文摘要：

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