Publication:
Observation of electroweak production of Wγ with two jets in proton-proton collisions at s=13 TeV

Дата
2020
Авторы
Sirunyan, A. M.
Tumasyan, A.
Adam, W.
Ambrogi, F.
Chistov, R.
Danilov, M.
Oskin, A.
Parygin, P.
Polikarpov, S.
Matveev, V.
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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Аннотация
© 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.
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Observation of electroweak production of Wγ with two jets in proton-proton collisions at s=13 TeV / Sirunyan, A.M. [et al.] // Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. - 2020. - 10.1016/j.physletb.2020.135988
URI
https://www.doi.org/10.1016/j.physletb.2020.135988
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85098720639&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000599859900022
 https://openrepository.mephi.ru/handle/123456789/23043
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