Measurement of the production cross section for a W boson in association with a charm quark in proton–proton collisions at s=13TeV.
- Resource Type
- Article
- Authors
- Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Valle, A. Escalante Del; Hussain, P. S.; Jeitler, M.; Krammer, N.; Lechner, L.; Liko, D.; Mikulec, I.; Paulitsch, P.; Pitters, F. M.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.
- Source
- European Physical Journal C -- Particles & Fields. Jan2024, Vol. 84 Issue 1, p1-37. 37p.
- Subject
- *PROTON-proton interactions
*BOSONS
*QUARKS
*QUANTUM chromodynamics
*NEGATIVE muon
*MUONS
- Language
- ISSN
- 1434-6044
The strange quark content of the proton is probed through the measurement of the production cross section for a W boson and a charm (c) quark in proton–proton collisions at a center-of-mass energy of 13 Te V . The analysis uses a data sample corresponding to a total integrated luminosity of 138 fb - 1 collected with the CMS detector at the LHC. The W bosons are identified through their leptonic decays to an electron or a muon, and a neutrino. Charm jets are tagged using the presence of a muon or a secondary vertex inside the jet. The W + c production cross section and the cross section ratio R c ± = σ (W + + c ¯) / σ (W - + c) are measured inclusively and differentially as functions of the transverse momentum and the pseudorapidity of the lepton originating from the W boson decay. The precision of the measurements is improved with respect to previous studies, reaching 1% in R c ± = 0.950 ± 0.005 (stat) ± 0.010 (syst) . The measurements are compared with theoretical predictions up to next-to-next-to-leading order in perturbative quantum chromodynamics. [ABSTRACT FROM AUTHOR]