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Krätschmer, I.; Liko, D.; Mertens, A.; Tonelli Manganote, E. J.; Padula, SandraS; Yazgan, E.; Wang, D.; Cabrera, A.; Puljak, I.; Sculac, T.; Mavromanolakis, G.; Rander, J.; Sirois, Y.; Le Bihan, A.-C.; Kiesel, M. K.; Centis Vignali, M.; Kogler, R.; Vellidis, K.; Hajdu, C.; Karancsi, J.; Chawla, R.; Kaur, A.; Thakur, S.; Mohanty, G. B.; Felcini, M.; Zito, G.; Meschini, M.; Lacaprara, S.; Zanetti, M.; Rovelli, C.; Soldi, D.; Candelise, V.; Heredia-De La Cruz, I.; Asghar, M. I.; Nawrocki, K.; Beirão Da Cruz E Silva, C.; Bunin, P.; Golutvin, I.; Lanev, A.; Karneyeu, A.; Kirsanov, M.; Toropin, A.; Popov, V.; Philippov, D.; Blinov, V.; Okhotnikov, V.; Gonzalez Lopez, O.; Fulcher, J.; Bäni, L.; Berger, P.; Hits, D.; Schönenberger, M.; Pozdnyakov, A.; Chen, K. F.; Komurcu, Y.; Levchuk, L.; Olaiya, E.; Womersley, W. J.; Bainbridge, R.; Breeze, S.; Singh, G.; Winterbottom, D.; Kyberd, P.; Lee, J.; Syarif, R.; Bouvier, E.; Wei, H.; Branson, J. G.; Klein, D.; Vartak, A.; Wagner, S. R.; Tan, S. M.; Cerati, G. B.; Duarte, J.; Sexton-Kennedy, E.; Sperka, D.; Hagopian, S.; Sharma, V.; Cavanaugh, R.; Wetzel, J.; Sarica, U.; Bylinkin, A.; Ivanov, A.; Skhirtladze, N.; Wright, D.; Hadley, N. J.; Hsu, D.; Roland, G.; Bloom, K.; Norberg, S.; Rorie, J.; Dulemba, J. L.; Gershtein, Y.; Bouhali, O.; Luo, S.; Rathjens, D.; Kunori, S.; Peltola, T.; Greene, S.; Joyce, M.
The European physical journal. C, Particles and fields, 03/2019, Letnik: 79, Številka: 3Journal Article
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 13 Te . The data correspond to an integrated luminosity of 35.7 fb - 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 0 + π ± → K ∓ + π ± + π ± . A cross section is measured in the fiducial region defined by the muon transverse momentum p T μ > 26 Ge , muon pseudorapidity | η μ | < 2.4 , and charm quark transverse momentum p T c > 5 Ge . 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.
