论文标题
$ \ sqrt {s _ {\ rm {nn}}} $ = 5.02 TEV PP和P-PB Collisision的$ \ sqrt {s _ {\ rm {nn}}}中的隔离光子 - hadron相关性的测量
Measurement of isolated photon-hadron correlations in $\sqrt{s_{\rm{NN}}}$ = 5.02 TeV pp and p-Pb collisions
论文作者
论文摘要
本文使用Alice检测器在LHC上收集的PP和P-PB数据介绍了分离的光子 - 二子相关性。对于| $η$ |的光子<0.67和12 <$ p _ {\ rm {t}} $ <40 Gev/$ c $，范围内带电粒子的相关收益率| $η$ | <0.80和0.5 <$ p _ {\ rm {t}} $ <10 GEV/$ C $。这些动量远低于LHC上以前的测量。 PP和P-PB之间没有显着差异，Pythia 8.2描述了不确定性中的两个数据集。该测量结果限制了P-PB碰撞中Parton碎片化的核影响，并为未来对PB-PB碰撞的研究提供了基准。
This paper presents isolated photon-hadron correlations using pp and p-Pb data collected by the ALICE detector at the LHC. For photons with |$η$| < 0.67 and 12 < $p_{\rm{T}}$ < 40 GeV/$c$, the associated yield of charged particles in the range |$η$| < 0.80 and 0.5 < $p_{\rm{T}}$ < 10 GeV/$c$ is presented. These momenta are much lower than previous measurements at the LHC. No significant difference between pp and p-Pb is observed, with PYTHIA 8.2 describing both data sets within uncertainties. This measurement constrains nuclear effects on the parton fragmentation in p-Pb collisions, and provides a benchmark for future studies of Pb-Pb collisions.
