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Title: | Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s = 13 TeV |
Authors: | Sirunyan, А. М. Tumasyan, A. R. Adam, Wolfgang Ambrogi, Federico Tyurin, Nikolay Evgenjevich Babaev, Anton Anatoljevich Sukhikh, Leonid Grigorievich |
Keywords: | CMS; physics; vector boson scattering |
Issue Date: | 2020 |
Publisher: | Elsevier |
Citation: | Observation of electroweak production of Wγ with two jets in proton-proton collisions at √s = 13 TeV / А. М. Sirunyan, A. R. Tumasyan, W. Adam [et al.] // Physics Letters B. — 2020. — Vol. 811. — [135988, 27 p.]. |
Abstract: | 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://earchive.tpu.ru/handle/11683/73257 |
Appears in Collections: | Репринты научных публикаций |
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reprint-nw-37402.pdf | 1,04 MB | Adobe PDF | View/Open |
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