Azimuthal Correlations in Z +Jets Events in Proton-Proton Collisions at √s = 13 TeV
The European Physical Journal C 2023
Kārlis Dreimanis, Viesturs Veckalns, CMS Collaboration

he production of Z bosons associated with jets is measured in pppp collisions at s=13 TeVs ​=13TeV with data recorded with the CMS experiment at the LHC corresponding to an integrated luminosity of 36.3 fb−1fb−1. The multiplicity of jets with transverse momentum pT>30 GeVpT​>30GeV is measured for different regions of the Z boson’s pT(Z )pT​(Z ), from lower than 10 GeVGeV to higher than 100 GeVGeV. The azimuthal correlation ΔϕΔϕ between the Z boson and the leading jet, as well as the correlations between the two leading jets are measured in three regions of pT(Z )pT​(Z ). The measurements are compared with several predictions at leading and next-to-leading orders, interfaced with parton showers. Predictions based on transverse-momentum dependent parton distributions and corresponding parton showers give a good description of the measurement in the regions where multiple parton interactions and higher jet multiplicities are not important. The effects of multiple parton interactions are shown to be important to correctly describe the measured spectra in the low pT(Z )pT​(Z ) regions.


DOI
10.1140/epjc/s10052-023-11833-z
Hyperlink
https://link.springer.com/article/10.1140/epjc/s10052-023-11833-z

The CMS Collaboration, A.Tumasyan, K.Dreimanis, V.Veckalns ... [et al.]. Azimuthal Correlations in Z +Jets Events in Proton-Proton Collisions at √s = 13 TeV. The European Physical Journal C, 2023, Vol. 83, No. 8, Article number 722. ISSN 1434-6044. e-ISSN 1434-6052. Available from: doi:10.1140/epjc/s10052-023-11833-z

Publication language
English (en)
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