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

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The CMS Collaboration , Sirunyan , A M , Tumasyan , A , Eerola , P , Forthomme , L , Kirschenmann , H , Österberg , K , Voutilainen , M , Bharti , M , Brücken , E , Garcia , F , Havukainen , J , Heikkilä , J , Karimäki , V , Kim , M , Kinnunen , R , Kortelainen , M , Lampén , T , Lassila-Perini , K , Laurila , S , Lehti , S , Lindén , T , Luukka , P , Pekkanen , J , Siikonen , H , Tuominen , E , Tuominiemi , J , Viinikainen , J & Tuuva , T 2021 , ' 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 ' , Journal of High Energy Physics , no. 5 , 285 . https://doi.org/10.1007/JHEP05(2021)285

Title: 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
Author: The CMS collaboration; Sirunyan, A. M.; Tumasyan, A.; Eerola, P.; Forthomme, Laurent; Kirschenmann, H.; Österberg, K.; Voutilainen, M.; Bharti, M.; Brücken, Erik; Garcia, F.; Havukainen, J.; Heikkilä, Jaana; Karimäki, V.; Kim, Minsuk; Kinnunen, R.; Kortelainen, Matti; Lampén, T.; Lassila-Perini, K.; Laurila, S.; Lehti, S.; Lindén, T.; Luukka, P.; Pekkanen, Juska; Siikonen, H.; Tuominen, E.; Tuominiemi, J.; Viinikainen, Jussi; Tuuva, T.
Contributor organization: Department of Physics
Helsinki Institute of Physics
Date: 2021-05-31
Language: eng
Number of pages: 43
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
DOI: https://doi.org/10.1007/JHEP05(2021)285
URI: http://hdl.handle.net/10138/332624
Abstract: 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.
Subject: 114 Physical sciences
Hadron-Hadron scattering (experiments)
Jet physics
Particle correlations and fluctuations
Hadron-Hadron scattering (experiments)
Jet physics
Particle correlations and fluctuations
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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