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Title
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Observation of electroweak production of W gamma with two jets in proton-proton collisions at √s=13 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| 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. |
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Language
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English
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Source (journal)
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Physics letters : B. - Amsterdam, 1967, currens
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Publication
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Amsterdam
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North-Holland
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2020
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ISSN
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0370-2693
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DOI
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10.1016/J.PHYSLETB.2020.135988
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Volume/pages
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811
(2020)
, 27 p.
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Article Reference
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135988
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ISI
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000599859900022
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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