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

The CMS collaboration, A. M. Sirunyan, A. Tumasyan, P. Eerola, Laurent Forthomme, H. Kirschenmann, K. Österberg, M. Voutilainen, Erik Brücken, F. Garcia, J. Havukainen, V. Karimäki, Minsuk Kim, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Lehti, T. Lindén, H. Siikonen, E. TuominenJ. Tuominiemi, P. Luukka, T. Tuuva

Tutkimustuotos: ArtikkelijulkaisuArtikkelivertaisarvioitu

Abstrakti

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 root 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 p(T) of the Z boson and p(T) 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 |eta| < 2.4 and p(T)> 10 GeV, at least one lepton with p(T)> 26 GeV, and a mass of the pair in the range 71-111 GeV, while the charm jet is required to have p(T)> 30 GeV and |eta| < 2.4. These are the first measurements of these cross sections in proton-proton collisions at 13 TeV.

Alkuperäiskielienglanti
Artikkeli109
LehtiJournal of High Energy Physics
Numero4
Sivumäärä41
ISSN1029-8479
DOI - pysyväislinkit
TilaJulkaistu - 13 huhtikuuta 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 114 Fysiikka
  • Hadron-Hadron scattering (experiments)
  • QCD

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