Measurement of Associated Production of a W Boson and a Charm Quark in Proton–Proton Collisions at √s = 13 TeV

European Physical Journal C 2019
Viesturs Veckalns, et al 100

Measurements are presented of associated production of a W boson and a charm quark (W + c) in proton–proton collisions at a center-of-mass energy of 13Te. The data correspond to an integrated luminosity of 35.7fb-1 collected by the CMS experiment at the CERN LHC. The W bosons are identified by their decay into a muon and a neutrino. The charm quarks are tagged via the full reconstruction of D ∗ (2010) ± mesons that decay via D ∗ (2010) ± → D + π ± → K ∓ + π ± + π ± . A cross section is measured in the fiducial region defined by the muon transverse momentum pTμ>26Ge, muon pseudorapidity | η μ | < 2.4 , and charm quark transverse momentum pTc>5Ge. The inclusive cross section for this kinematic range is σ(W+c)=1026±31(stat)+76-72(syst) pb. The cross section is also measured differentially as a function of the pseudorapidity of the muon from the W boson decay. These measurements are compared with theoretical predictions and are used to probe the strange quark content of the proton.

DOI
10.1140/epjc/s10052-019-6752-1
Hyperlink
https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6752-1

Veckalns, V., 100, e. Measurement of Associated Production of a W Boson and a Charm Quark in Proton–Proton Collisions at √s = 13 TeV. European Physical Journal C, 2019, Vol. 79, No. 3, pp.1-10. ISSN 1434-6044. e-ISSN 1434-6052. Available from: doi:10.1140/epjc/s10052-019-6752-1

Publication language
English (en)