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Di Croce, D.; Van Haevermaet, H.; Grebenyuk, A.; Makarenko, I.; Pétré, L.; Bruno, G.; Misheva, M.; Petkov, P.; Mejia Guisao, J.; Kolosova, M.; Finger, M.; Mahmoud, M.A.; Kinnunen, R.; Beaudette, F.; Kucher, I.; El Mamouni, H.; Ille, B.; Viret, S.; Merschmeyer, M.; Wiedenbeck, S.; Haj Ahmad, W.; Sert, H.; Guthoff, M.; Lenz, T.; Rieger, O.; Droll, A.; Koppenhöfer, R.; Vesztergombi, G.; Mal, P.; Sandeep, K.; Behera, P.K.; De Filippis, N.; Fiore, L.; Venditti, R.; Marcellini, S.; Albergo, S.; Ragazzi, S.; Tosi, M.; Calzaferri, S.; Riccardi, C.; Rossi, A.; Di Domenico, M.R.; Cavallari, F.; Argiro, S.; Della Ricca, G.; Huh, C.; Yang, Y.C.; Seo, H.; Jeong, Y.; Krofcheck, D.; Konecki, M.; Krolikowski, J.; Karneyeu, A.; Krasnikov, N.; Chistov, R.; Oskin, A.; Pérez-Calero Yzquierdo, A.; Romero, L.; Fernandez Menendez, J.; Duarte Campderros, J.; Kailasapathy, B.; Dharmaratna, W.G.D.; Liyanage, K.; Aarrestad, T.K.; Baillon, P.; James, T.; Sakulin, H.; Lu, R.-S.; Brew, C.; Brown, R.M.; Davies, G.; Hall, G.; Uniyal, R.; Cosby, C.; Heintz, U.; Ko, W.; Lander, R.; Ghiasi Shirazi, S.M.A.; Nguyen, T.Q.; Thom, J.; Freeman, J.; Gottschalk, E.; Green, D.; Guerrero, D.; Martinez, G.; Mantilla, C.; Wong, K.; Gomez Ceballos, G.; Strobbe, N.; Claes, D.R.; Nguyen, D.; Rappoccio, S.; Barberis, E.; Wood, D.; Gunter, T.; Shi, W.; Dulemba, J.L.; Thayil, S.A.; Safonov, A.; Ni, H.
Physics letters. B, 12/2020, Volume: 811, Issue: CJournal Article
A first observation is presented for the electroweak production of a W boson, a photon, and two jets in proton-proton collisions. The W boson decays are selected by requiring one identified electron or muon and an imbalance in transverse momentum. The two jets are required to have a high dijet mass and a large separation in pseudorapidity. The measurement is based on data collected with the CMS detector at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The observed (expected) significance for this process is 4.9 (4.6) standard deviations. After combining with previously reported CMS results at 8 TeV, the observed (expected) significance is 5.3 (4.8) standard deviations. The cross section for the electroweak Wγjj production in a restricted fiducial region is measured as 20.4±4.5fb and the total cross section for Wγ production in association with 2 jets in the same fiducial region is 108±16fb. All results are in good agreement with recent theoretical predictions. Constraints are placed on anomalous quartic gauge couplings in terms of dimension-8 effective field theory operators.
