Measurement of the primary Lund jet plane density in proton-proton collisions at √(s) = 13 TeV
arxiv(2023)
摘要
A measurement is presented of the primary Lund jet plane (LJP) density in
inclusive jet production in proton-proton collisions. The analysis uses 138
fb^-1 of data collected by the CMS experiment at √(s) = 13 TeV. The
LJP, a representation of the phase space of emissions inside jets, is
constructed using iterative jet declustering. The transverse momentum
k_T and the splitting angle Δ R of an emission relative to
its emitter are measured at each step of the jet declustering process. The
average density of emissions as function of ln(k_T/GeV) and
ln(R/Δ R) is measured for jets with distance parameters R = 0.4 or
0.8, transverse momentum p_T 700 GeV, and rapidity | y| 1.7. The jet substructure is measured using the charged-particle tracks
of the jet. The measured distributions, unfolded to the level of stable
particles, are compared with theoretical predictions from simulations and with
perturbative quantum chromodynamics calculations. Due to the ability of the LJP
to factorize physical effects, these measurements can be used to improve
different aspects of the physics modeling in event generators.
更多查看译文
AI 理解论文
溯源树
样例
生成溯源树,研究论文发展脉络
Chat Paper
正在生成论文摘要