Measurement of associated production of a W boson and a charm quark in proton–proton collisions at √&lt;em&gt;s&lt;/em&gt; = 13 TeV

Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Erö, J.; Escalante Del Valle, A.; Caminada, L.; Deiters, K.; Erdmann, W.; Horisberger, R.; Ingram, Q.; Kaestli, H.C.; Kotlinski, D.; Langenegger, U.; Rohe, T.; Wiederkehr, S.A.; Woods, N.

doi:10.1140/epjc/s10052-019-6752-1

Measurement of associated production of a W boson and a charm quark in proton–proton collisions at √s = 13 TeV

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, Brandstetter J, Dragicevic M, Erö J, Escalante Del Valle A, Caminada L, Deiters K, Erdmann W, Horisberger R, Ingram Q, Kaestli HC, Kotlinski D, Langenegger U, Rohe T, Wiederkehr SA, Woods N, et al.

Citation

Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., … Woods, N. (2019). Measurement of associated production of a W boson and a charm quark in proton–proton collisions at √s = 13 TeV. European Physical Journal C: Particles and Fields, 79(3), 269 (31 pp.). https://doi.org/10.1140/epjc/s10052-019-6752-1

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:27973

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)^± → D⁰ + π^± → K^∓ + π^± + π^±. A cross section is measured in the fiducial region defined by the muon transverse momentum p^μ_T > 26 GeV, muon pseudorapidity |η^μ| < 2.4, and charm quark transverse momentum p^c_T > 5 GeV. 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.