论文标题
$ \ sqrt {s} = $ 13 tev的proton-proton碰撞中的$ z $标记喷射的已确定的电荷强子分布的多变量研究
Multidifferential study of identified charged hadron distributions in $Z$-tagged jets in proton-proton collisions at $\sqrt{s}=$13 TeV
论文作者
论文摘要
喷气片段化功能是首次在质子蛋白质碰撞碰撞中测量的，用于针对$ z $ boson的喷气机中带电的尖pions，kaons和质子。纵向和横向研究了带电的 - 戴龙的分布，以横向动量20 $ <p _ {\ textrm {t}} <100 $ GEV和伪行为范围$ 2.5 <η<4 $。用LHCB实验收集数据样本，在13 TEV的质量中心能量中，对应于1.64 fb $^{ - 1} $的集成发光度。也首次测量了三体差分分布作为强子纵向动量分数，强子横向动量和射流横向动量的函数。这有助于限制横向摩托明依赖性的碎片函数。不同强子物种的测量分布的形状和幅度的差异为主要由光夸克引发的喷气机提供了见解。
Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a $Z$ boson. The charged-hadron distributions are studied longitudinally and transversely to the jet direction for jets with transverse momentum 20 $< p_{\textrm{T}} < 100$ GeV and in the pseudorapidity range $2.5 < η< 4$. The data sample was collected with the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.64 fb$^{-1}$. Triple differential distributions as a function of the hadron longitudinal momentum fraction, hadron transverse momentum, and jet transverse momentum are also measured for the first time. This helps constrain transverse-momentum-dependent fragmentation functions. Differences in the shapes and magnitudes of the measured distributions for the different hadron species provide insights into the hadronization process for jets predominantly initiated by light quarks.
