"Table 10" of "Medium modification of the shape of small-radius jets in central Pb-Pb collisions at $\sqrt{s_{\mathrm {NN}}} = 2.76\,\rm{TeV}$"

CERN-LHC. A set of jet shapes for a small resolution parameter $R = 0.2$ was measured at mid-rapidity for $0$-$10\%$ central Pb-Pb collisions at a centre-of-mass energy $\sqrt{\rm{s_{NN}}}$=2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). This set of jet shapes includes the first radial moment or angularity, $g$; the momentum dispersion, $p_{\rm T}D$; and the difference between the leading and sub-leading constituent track transverse momentum, $LeSub$. These observables provide complementary information on the jet fragmentation and can constrain different aspects of the theoretical description of jet-medium interactions. The measured jet shapes are compared with PYTHIA calculations.

本数据集源自欧洲核子研究中心大型强子对撞机（Large Hadron Collider, LHC）。针对质心系能量√(s_NN)=2.76 TeV、中心度0%~10%的铅-铅碰撞，研究团队利用LHC上的ALICE探测器在快度中部区域测量了分辨参数R=0.2的小尺寸喷注形状（jet shapes）。该套喷注形状数据集包含一阶径向矩（又称角矩）g、动量弥散p_T D，以及领头与次领头组成径迹的横向动量差值LeSub。上述可观测量可为喷注碎裂过程提供互补信息，并可约束喷注-介质相互作用理论描述的不同方面。研究团队将实测得到的喷注形状与PYTHIA计算结果进行了对比。