Measurements of the differential cross sections of the production of Z plus jets and gamma plus jets and of Z boson emission collinear with a jet 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, M. Bharti, Erik Brücken, F. Garcia, J. Havukainen, V. Karimäki, Minsuk Kim, R. Kinnunen, T. Lampén, K. Lassila-Perini, S. Laurila, S. Lehti, T. LindénP. Luukka, H. Siikonen, E. Tuominen, J. Tuominiemi, T. Tuuva

Tutkimustuotos: ArtikkelijulkaisuArtikkelivertaisarvioitu

Abstrakti

Measurements of the differential cross sections of Z + jets and gamma + jets production, and their ratio, are presented as a function of the boson transverse momentum. Measurements are also presented of the angular distribution between the Z boson and the closest jet. The analysis is based on pp collisions at a center-of-mass energy of 13 TeV corresponding to an integrated luminosity of 35.9 fb(-1) recorded by the CMS experiment at the LHC. The results, corrected for detector effects, are compared with various theoretical predictions. In general, the predictions at higher orders in perturbation theory show better agreement with the measurements. This work provides the first measurement of the ratio of the differential cross sections of Z + jets and gamma + jets production at 13 TeV, as well as the first direct measurement of Z bosons emitted collinearly with a jet.

Alkuperäiskielienglanti
Artikkeli285
LehtiJournal of High Energy Physics
Numero5
Sivumäärä43
ISSN1029-8479
DOI - pysyväislinkit
TilaJulkaistu - 31 toukokuuta 2021
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä, vertaisarvioitu

Tieteenalat

  • 114 Fysiikka
  • Hadron-Hadron scattering (experiments)
  • Jet physics
  • Particle correlations and fluctuations

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