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https://hdl.handle.net/11147/11790
Title: | Observation of electroweak production of W gamma with two jets in proton-proton collisions at root s=13 TeV | Authors: | CMS Collaboration Karapınar, Güler |
Keywords: | CMS Physics Vector boson scattering |
Issue Date: | 2020 | Publisher: | Elsevier | 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 W gamma jj production in a restricted fiducial region is measured as 20.4 +/- 4.5 fb and the total cross section for W gamma production in association with 2 jets in the same fiducial region is 108 +/- 16 fb. 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. (C) 2020 The Author(s). Published by Elsevier B.V. | URI: | https://doi.org/10.1016/j.physletb.2020.135988 https://hdl.handle.net/11147/11790 |
ISSN: | 0370-2693 1873-2445 |
Appears in Collections: | Rectorate / Rektörlük WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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