"Table 7" of "Measurement of the double-differential inclusive jet cross section in proton-proton collisions at sqrt(s) = 13 TeV"

CERN-LHC. A measurement of the double-differential inclusive jet cross section as a function of jet transverse momentum pT and absolute jet rapidity |y| is presented. The analysis is based on proton-proton collisions collected by the CMS experiment at the LHC at a centre-of-mass energy of 13 TeV. The data samples correspond to integrated luminosities of 71 and 44 inverse-picobarns for |y|< 3 and 3.2 < |y| < 4.7, respectively. Jets are reconstructed with the anti-kt clustering algorithm for two jet sizes, R, of 0.7 and 0.4, in a phase space region covering jet pT up to 2 TeV and jet rapidity up to |y| = 4.7. Predictions of perturbative quantum chromodynamics at next-to-leading order precision, complemented with electroweak and nonperturbative corrections, are used to compute the absolute scale and the shape of the inclusive jet cross section. The cross section difference in R, when going to a smaller jet size of 0.4, is best described by Monte Carlo event generators with next-to-leading order predictions matched to parton showering, hadronisation, and multiparton interactions. In the phase space accessible with the new data, this measurement provides a first indication that jet physics is as well understood at sqrt(s) = 13 TeV as at smaller centre-of-mass energies.

欧洲核子研究中心大型强子对撞机（CERN-LHC）。本文报道一项双微分单举喷注（jet）截面的测量结果，该截面以喷注横向动量$p_ ext{T}$与喷注绝对快度$|y|$为自变量。本分析基于大型强子对撞机（LHC）上紧凑缪子线圈（CMS）实验采集的质心系能量为13 TeV的质子-质子碰撞数据。针对$|y|<3$与$3.2<|y|<4.7$两个快度区间，对应数据样本的积分亮度分别为71与44皮靶恩（$ ext{pb}^{-1}$）。
本研究采用anti-kt聚类算法对喷注进行重建，分别使用尺寸参数$R=0.7$与$R=0.4$两种喷注构型，覆盖的相空间区域为喷注横向动量最高至2 TeV、喷注快度最高至$|y|=4.7$。
我们采用次领头阶精度的微扰量子色动力学（perturbative quantum chromodynamics, pQCD）预言，并辅以电弱修正与非微扰修正，计算得到单举喷注截面的绝对标度与分布形状。当喷注尺寸参数$R$从0.7减小至0.4时，截面的差异可由结合了次领头阶预言与部分子簇射、强子化及多部分子相互作用的蒙特卡洛事件产生器最优描述。
在本次新数据所覆盖的相空间范围内，本次测量首次提供了明确迹象：在质心系能量$sqrt{s}=13 ext{TeV}$的质子-质子碰撞中，喷注物理的认知水平与更低质心系能量下的认知水平相当。