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Measurement of differential cross sections for Z bosons produced in association with charm jets in pp collisions at s√ = 13 TeV

Authors
  • Sirunyan, AM
  • Tumasyan, A
  • Adam, W
  • Bergauer, T
  • Dragicevic, M
  • Erö, J
  • Escalante Del Valle, A
  • Frühwirth, R
  • Jeitler, M
  • Krammer, N
  • Lechner, L
  • Liko, D
  • Madlener, T
  • Mikulec, I
  • Pitters, FM
  • Rad, N
  • Schieck, J
  • Schöfbeck, R
  • Spanring, M
  • Templ, S
  • And 2325 more
Publication Date
Mar 15, 2021
Source
Spiral - Imperial College Digital Repository
Keywords
Language
English
License
Green
External links

Abstract

Measurements are presented of differential cross sections for the production of Z bosons in association with at least one jet initiated by a charm quark in pp collisions at s√ = 13 TeV. The data recorded by the CMS experiment at the LHC correspond to an integrated luminosity of 35.9 fb−1. The final states contain a pair of electrons or muons that are the decay products of a Z boson, and a jet consistent with being initiated by a charm quark produced in the hard interaction. Differential cross sections as a function of the transverse momentum pT of the Z boson and pT of the charm jet are compared with predictions from Monte Carlo event generators. The inclusive production cross section 405.4 ± 5.6 (stat) ± 24.3 (exp) ± 3.7 (theo) pb, is measured in a fiducial region requiring both leptons to have pseudorapidity |η| < 2.4 and pT > 10 GeV, at least one lepton with pT > 26 GeV, and a mass of the pair in the range 71–111 GeV, while the charm jet is required to have pT > 30 GeV and |η| < 2.4. These are the first measurements of these cross sections in proton-proton collisions at 13 TeV.

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