Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at √s=13Te

CMS Collaboration

Research output: Contribution to journalArticle

Abstract

A measurement for inclusive 2- and 3-jet events of the azimuthal correlation between the two jets with the largest transverse momenta, Δϕ12, is presented. The measurement considers events where the two leading jets are nearly collinear (“back-to-back”) in the transverse plane and is performed for several ranges of the leading jet transverse momentum. Proton-proton collision data collected with the CMS experiment at a center-of-mass energy of 13Te and corresponding to an integrated luminosity of 35.9fb-1 are used. Predictions based on calculations using matrix elements at leading-order and next-to-leading-order accuracy in perturbative quantum chromodynamics supplemented with leading-log parton showers and hadronization are generally in agreement with the measurements. Discrepancies between the measurement and theoretical predictions are as large as 15%, mainly in the region 177 < Δϕ12< 180 . The 2- and 3-jet measurements are not simultaneously described by any of models.

Original languageEnglish
Article number773
JournalEuropean Physical Journal C
Volume79
Issue number9
DOIs
Publication statusPublished - 2019 Sep 1

Fingerprint

topology
Topology
collisions
transverse momentum
Momentum
Protons
protons
predictions
showers
partons
center of mass
Luminance
quantum chromodynamics
luminosity
matrices
Experiments
energy

Keywords

  • Azimuthal angle
  • CMS
  • Jets
  • MC generators
  • Physics
  • QCD

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

Cite this

Azimuthal separation in nearly back-to-back jet topologies in inclusive 2- and 3-jet events in pp collisions at √s=13Te. / CMS Collaboration.

In: European Physical Journal C, Vol. 79, No. 9, 773, 01.09.2019.

Research output: Contribution to journalArticle

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