Measurement of the associated production of a Z boson with charm or bottom quark jets in proton-proton collisions at $\sqrt{s}=$ 13 TeV

  • Freya Blekman (Creator)
  • Emil Sørensen Bols (Creator)
  • Simranjit Singh Chhibra (Creator)
  • Jorgen D'Hondt (Creator)
  • Jarne Theo De Clercq (Creator)
  • Denys Lontkovskyi (Creator)
  • Steven Lowette (Creator)
  • Ivan Marchesini (Creator)
  • Seth Moortgat (Creator)
  • Quentin Python (Creator)
  • Kirill Skovpen (Creator)
  • Stefaan Tavernier (Creator)
  • Walter Van Doninck (Creator)
  • Petra Van Mulders (Creator)
  • Douglas Burns (Creator)

Dataset

Abstract

Ratios of cross sections, σðZ þ c jetsÞ=σðZ þ jetsÞ, σðZ þ b jetsÞ=σðZ þ jetsÞ, and σðZ þ c jetsÞ=
σðZ þ b jetsÞ in the associated production of a Z boson with at least one charm or bottom quark jet are
measured in proton-proton collisions at ffiffi
s p ¼ 13 TeV. The data sample, collected by the CMS experiment
at the CERN LHC, corresponds to an integrated luminosity of 35.9 fb−1, with a fiducial volume of
pT > 30 GeV and jηj < 2.4 for the jets, where pT and η represent transverse momentum and
pseudorapidity, respectively. The Z boson candidates come from leptonic decays into electrons or
muons with pT > 25 GeV and jηj < 2.4, and the dilepton mass satisfies 71 < mZ < 111 GeV. The
measured values are σðZ þ c jetsÞ=σðZ þ jetsÞ ¼ 0.102 0.002 0.009, σðZ þ b jetsÞ=σðZ þ jetsÞ ¼
0.0633 0.0004 0.0015, and σðZ þ c jetsÞ=σðZ þ b jetsÞ ¼ 1.62 0.03 0.15. Results on the inclusive and differential cross section ratios as functions of jet and Z boson transverse momentum are
compared with predictions from leading and next-to-leading order perturbative quantum chromodynamics
calculations. These are the first measurements of the cross section ratios at 13 TeV
Datum van beschikbaarheid30 jul 2020
UitgeverHEPData

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