Measurement of the primary Lund jet plane density in proton-proton collisions at $$ sqrt{textrm{s}} $$ = 13 TeV Journal Article uri icon

Overview

abstract

  • Abstract; A measurement is presented of the primary Lund jet plane (LJP) density in inclusive jet production in proton-proton collisions. The analysis uses 138 fb1 of data collected by the CMS experiment at $$ sqrt{s} $$; ; s; ; = 13 TeV. The LJP, a representation of the phase space of emissions inside jets, is constructed using iterative jet declustering. The transverse momentum kT and the splitting angle ∆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(kT/GeV) and ln(R/R) is measured for jets with distance parameters R = 0.4 or 0.8, transverse momentum pT> 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 charged 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.

publication date

  • May 10, 2024

has restriction

  • gold

Date in CU Experts

  • May 28, 2024 11:58 AM

Full Author List

  • Hayrapetyan A; Tumasyan A; Adam W; Andrejkovic JW; Bergauer T; Chatterjee S; Damanakis K; Dragicevic M; Escalante Del Valle A; Hussain PS

author count

  • 2368

Other Profiles

Electronic International Standard Serial Number (EISSN)

  • 1029-8479

Additional Document Info

volume

  • 2024

issue

  • 5

number

  • 116