arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0908.2382nucl-ex
收藏

RHIC的直接光子

Direct Photons at RHIC

Klaus Reygers

摘要:

简要介绍了在相对论重离子对撞机(RHIC)PHENIX实验上进行的sqrt(sNN)= 200 GeV的p+p和Au+Au碰撞直接光子测量。在电磁量能器的帮助下,测定了pT > 4GeV/c的直接光子产额和光子-强子方位角关联。通过检测来自虚光子的内转换的e+e-对,直接光子产额在1 < pT <4GeV/c之间被测量。在Au+Au碰撞中,来自夸克-胶子等离子体(QGP)的热光子预计将对该范围内的总直接光子产额做出显著贡献。

英文摘要:

A brief overview of direct-photon measurements in p+p and Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT > 4 GeV/c and photon-hadron azimuthal correlations were determined with the aid of an electromagnetic calorimeter. By detecting e+e- pairs from the internal conversion of virtual photons direct-photon yields were measured between 1 < pT < 4 GeV/c. In Au+Au collisions thermal photons from a quark-gluon plasma (QGP) are expected to contribute significantly to the total direct-photon yield in this range.

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。

↑