Compact Muon Solenoid
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| CMS-PAS-SMP-24-010 | ||
| Triple-differential measurement of Z+jet production in proton-proton collisions at $ \sqrt{s}= $ 13 TeV | ||
| CMS Collaboration | ||
| 2026-03-02 | ||
| Abstract: A measurement is presented of the differential production cross section of $ \mathrm{Z}(\to\mu\mu) $+jet events using proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the CMS experiment at the CERN LHC. The data, collected in the years 2016--2018, correspond to an integrated luminosity of 138 fb$ ^{-1} $. The cross section is measured triple-differentially as a function of the transverse momentum of the muon pair, half of the absolute rapidity separation between the muon pair and the leading jet, and the boost in rapidity of their center-of-mass system in the laboratory frame. This choice of observables ensures sensitivity to the scattering angle in the center-of-mass system and the fractional momenta of the interacting partons. After unfolding for detector effects in all three dimensions simultaneously, the results are compared with predictions at next-to-next-to-leading order in perturbative quantum chromodynamics corrected for electroweak and nonperturbative effects. The presented measurement provides valuable information towards the partonic structure of the proton. | ||
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Compact Muon Solenoid LHC, CERN |
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