Measurement of the inclusive and differential WZ production cross sections, polarization angles, and triple gauge couplings in pp collisions at √s = 13 TeV

The CMS collaboration, The CMS collaboration, The CMS collaboration

Araştırma sonucu: Dergiye katkıMakalebilirkişi

33 Atıf (Scopus)

Özet

The associated production of a W and a Z boson is studied in final states with multiple leptons produced in proton-proton (pp) collisions at a centre-of-mass energy of 13 TeV using 137 fb−1 of data collected with the CMS detector at the LHC. A measurement of the total inclusive production cross section yields σtot(pp → WZ) = 50.6 ± 0.8 (stat) ± 1.5 (syst) ± 1.1 (lumi) ± 0.5 (theo) pb. Measurements of the fiducial and differential cross sections for several key observables are also performed in all the final-state lepton flavour and charge compositions with a total of three charged leptons, which can be electrons or muons. All results are compared with theoretical predictions computed up to next-to-next-to-leading order in quantum chromodynamics plus next-to-leading or- der in electroweak theory and for various sets of parton distribution functions. The results include direct measurements of the charge asymmetry and the W and Z vector boson polarization. The first observation of longitudinally polarized W bosons in WZ production is reported. Anomalous gauge couplings are searched for, leading to new constraints on beyond-the-standard-model contributions to the WZ triple gauge coupling. [Figure not available: see fulltext.]

Orijinal dilİngilizce
Makale numarası32
DergiJournal of High Energy Physics
Hacim2022
Basın numarası7
DOI'lar
Yayın durumuYayınlandı - Tem 2022

Bibliyografik not

Publisher Copyright:
© 2022, The Author(s).

Finansman

FinansörlerFinansör numarası
Horizon 2020 Framework Programme675440

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