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http://bura.brunel.ac.uk/handle/2438/22149
Title: | Observation of electroweak production of Wγ with two jets in proton-proton collisions at s=13 TeV |
Authors: | Sirunyan, AM Tumasyan, A Adam, W Ambrogi, F Bergauer, T Dragicevic, M Erö, J Escalante Del Valle, A Frühwirth, R Jeitler, M Krammer, N Lechner, L Liko, D Madlener, T Mikulec, I Pitters, FM Rad, N Schieck, J Schöfbeck, R Spanring, M Templ, S Waltenberger, W Wulz, CE Zarucki, M Chekhovsky, V Litomin, A Makarenko, V Suarez Gonzalez, J Darwish, MR De Wolf, EA Di Croce, D Janssen, X Kello, T Lelek, A Pieters, M Rejeb Sfar, H Van Haevermaet, H Van Mechelen, P Van Putte, S Van Remortel, N Blekman, F Bols, ES Chhibra, SS D'Hondt, J De Clercq, J Lontkovskyi, D Lowette, S Marchesini, I Moortgat, S Morton, A Python, Q Tavernier, S Van Doninck, W Van Mulders, P Beghin, D Bilin, B Clerbaux, B De Lentdecker, G Dorney, B Favart, L Grebenyuk, A Kalsi, AK Makarenko, I Moureaux, L Pétré, L Popov, A Postiau, N Starling, E Thomas, L Vander Velde, C Vanlaer, P Vannerom, D Wezenbeek, L Cornelis, T Dobur, D Gruchala, M Khvastunov, I Niedziela, M Roskas, C Skovpen, K Tytgat, M Verbeke, W Vermassen, B Vit, M Bruno, G Bury, F Caputo, C David, P Delaere, C Delcourt, M Donertas, IS Giammanco, A Lemaitre, V Mondal, K Prisciandaro, J Taliercio, A Teklishyn, M Vischia, P Wuyckens, S Zobec, J |
Keywords: | CMS;Physics |
Issue Date: | 2020 |
Publisher: | Elsevier |
Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2020 |
Abstract: | © 2020 The Author(s) 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. |
URI: | http://bura.brunel.ac.uk/handle/2438/22149 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2020.135988 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Electronic and Electrical Engineering Research Papers |
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