论文标题
$ p $+$ p $和$ p $+au碰撞的喷气子结构在$ \ sqrt {s _ {\ text {nn}}} = 200 $ gev at star
Jet substructure in $p$+$p$ and $p$+Au collisions at $\sqrt{s_{\text{NN}}} = 200$ GeV at STAR
论文作者
论文摘要
为了归因于在A+A碰撞中观察到的JET（喷射淬火）经历的党能量损失，通过热QCD培养基横穿Partons，有必要检查对相应喷气机的冷核物质（CNM）效应。从历史上看，这种检查是使用$ p $+a碰撞进行的。我们提出了对$ P $+$ P $和$ P $++au碰撞的喷气质量和软盘修饰量的完全校正的测量值EA是通过星梁梁计数器在向后（Au-go-to的）速度（$ -5.0 <η<-3.3 $）中确定的，以最大程度地减少在中高度测量的喷气机的自动相关。比较$ P $+AU碰撞中的喷气质量分布与$ p $+$ p $ collisions中的碰撞碰撞可以隔离CNM效应，以期在AU+AU碰撞中即将进行的喷气质量测量。
In order to attribute the partonic energy loss experienced by jets (jet quenching) observed in A+A collisions to the traversal of partons through the hot QCD medium, it is necessary to examine the cold nuclear matter (CNM) effects on the corresponding jets. Such an examination has historically been done using $p$+A collisions. We present fully corrected measurements of the jet mass and SoftDrop groomed jet mass in $p$+$p$ and $p$+Au collisions at STAR at $\sqrt{s_{\rm{NN}}}=200$ GeV as a function of the event activity (EA) to increase or decrease the magnitude of CNM effects. EA is determined in the backward (Au-going) rapidity ($-5.0<η<-3.3$) by the STAR Beam-Beam Counter to minimize auto-correlation with jets measured at mid-rapidity. Comparison of the jet mass distribution in $p$+Au collisions to that in $p$+$p$ collisions allows for isolation of CNM effects in anticipation of an upcoming jet mass measurement in Au+Au collisions.
