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| CMS-PAS-SMP-21-005 | ||
| Measurement of the production cross section of a W boson in association with a charm quark in proton-proton collisions at $\sqrt{s}= $ 13 TeV | ||
| CMS Collaboration | ||
| July 2022 | ||
| Abstract: The strange quark content of the proton is probed through the measurement of the production cross section of a W boson and a charm (c) quark in proton-proton collisions at a centre-of-mass energy of 13 TeV. The analysis uses a data sample corresponding to a total integrated luminosity of 138 fb$^{-1}$ collected by the CMS detector at the LHC. W bosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm jets are tagged by the presence of a muon or a secondary vertex inside the jet. The W+c production cross section and the cross section ratio $ \sigma({\rm W^+\! {+}\bar{c}}) / \sigma({\rm W^-\! {+}c})$ are measured inclusively and differentially as functions of the transverse momentum and the pseudorapidity of the lepton from the W boson decay. The measurements, with improved precision from previous CMS studies, are compared with theoretical predictions. | ||
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Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to EPJC. The superseded preliminary plots can be found here. |
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Compact Muon Solenoid LHC, CERN |
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