论文标题
核$ p_ \ perp $ - 从SPS到LHC的Drell-Yan和Quarkonium生产
Nuclear $p_\perp$-broadening of Drell-Yan and quarkonium production from SPS to LHC
论文作者
论文摘要
核$ p_ \ perp $ - 在$π$ a和pa碰撞中的drell-yan and quarkonium（$ j/ψ$，$υ$）的核能。世界数据遵循从SPS到LHC能量的简单缩放，一旦正确考虑了过程依赖性色因子，这允许在冷核物质中提取运输系数。我们发现$ \ hat {q}（x）\ propto x^{ - α} $，$α= 0.25 $ - $ 0.30 $。 The magnitude of the transport coefficient at $x=10^{-2}$ is $\hat{q}_0=0.051$ GeV$^2$/fm and $\hat{q}_0=0.075$ GeV$^2$/fm, whether $Q\bar{Q}$ pairs are assumed to be produced as color octet or color singlet states, respectively.还研究了核扩展数据与（CT14）Gluon密度之间的关系。
The nuclear $p_\perp$-broadening of Drell-Yan and quarkonium ($J/ψ$, $Υ$) production in $π$A and pA collisions is investigated. The world data follow a simple scaling from SPS to LHC energies, once the process-dependent color factors are properly taken into account, which allows for the extraction of the transport coefficient in cold nuclear matter. We find that $\hat{q}(x)\propto x^{-α}$ with $α=0.25$-$0.30$. The magnitude of the transport coefficient at $x=10^{-2}$ is $\hat{q}_0=0.051$ GeV$^2$/fm and $\hat{q}_0=0.075$ GeV$^2$/fm, whether $Q\bar{Q}$ pairs are assumed to be produced as color octet or color singlet states, respectively. The relation between nuclear broadening data and the (CT14) gluon density is also investigated.
