Direct photons at low transverse momentum: a signal for quark-gluon plasma in pp collisions at LHC.
Direct photons at low transverse momentum: a signal for quark-gluon plasma in pp collisions at LHC.
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DOI：
10.1103/physrevlett.106.242301
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发表时间：
2011-02
影响因子：
8.6
通讯作者：
Fuming Liu;K. Werner
中科院分区：
文献类型：
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作者：
Fuming Liu;K. Werner
我们研究光子产生的夸克胶子等离子体形成的质子-质子散射在7 TeV的情况下。结果表明，热光子产额与带电粒子多重数成二次方关系增加。这增强了高多重性事件的权重，并且即使在最小偏差事件中也会导致重要的光子产生，其中在横向动量值小于10 GeV/c的情况下，热光子在很大程度上主导于瞬发光子。
We investigate photon production in a scenario of quark-gluon plasma formation in proton-proton scattering at 7 TeV. It is shown that thermal photon yields increase quadratically with the charged particle multiplicity. This gives an enhanced weight to high multiplicity events, and leads to an important photon production even in minimum-bias events, where the thermal photons largely dominate over the prompt ones at transverse momentum values smaller than 10 GeV/c.