arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2005.14219hep-ex
收藏

$\sqrt{s} =$ 5.02 TeV质子-质子碰撞中b喷流形状的测量

Measurement of b jet shapes in proton-proton collisions at $\sqrt{s} =$ 5.02 TeV

CMS Collaboration

摘要:

我们提出了第一个研究的带电强子生产与喷注起源于b夸克在质子-质子碰撞在质心能量为5.02 TeV。本研究中使用的数据样本是用CERN LHC的CMS检测器收集的,对应于27.4 pb $^{-1}$的积分亮度。为了表征射流子结构,差分射流的形状,定义为带电强子的归一化横向动量分布作为从射流轴的角距离的函数,测量b射流。除了射流形状,与b射流相关的带电粒子的每射流产率也被量化,再次作为相对于射流轴线的角距离的函数。提取的射流形状和粒子产率分布的b射流进行比较,包容性射流的结果,以及与预测的PYTHIA和HERWIG++事件发生器。

英文摘要:

We present the first study of charged-hadron production associated with jets originating from b quarks in proton-proton collisions at a center-of-mass energy of 5.02 TeV. The data sample used in this study was collected with the CMS detector at the CERN LHC and corresponds to an integrated luminosity of 27.4 pb$^{-1}$. To characterize the jet substructure, the differential jet shapes, defined as the normalized transverse momentum distribution of charged hadrons as a function of angular distance from the jet axis, are measured for b jets. In addition to the jet shapes, the per-jet yields of charged particles associated with b jets are also quantified, again as a function of the angular distance with respect to the jet axis. Extracted jet shape and particle yield distributions for b jets are compared with results for inclusive jets, as well as with the predictions from the PYTHIA and HERWIG++ event generators.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑