Observation of electroweak W+W− pair production in association with two jets in proton-proton collisions at √s= 13 TeV

Авторы: Belyaev A.V., Boos E., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Kodolova O., Lukina O., Obraztsov S., Savrin V., Snigirev A., Collaboration CMS
Журнал: Physics Letters B
Том: 841
Год издания: 2023
Издательство: Elsevier BV
Местоположение издательства: Netherlands
Первая страница: 137495
DOI: 10.1016/j.physletb.2022.137495
Аннотация: An observation is reported of the electroweak production of a W+W− pair in association with two jets, with both W bosons decaying leptonically. The data sample corresponds to an integrated luminosity of 138 fb−1 of proton-proton collisions at √s = 13 TeV, collected by the CMS detector at the CERN LHC. Events are selected by requiring exactly two opposite-sign leptons (electrons or muons) and two jets with large pseudorapidity separation and high dijet invariant mass. Events are categorized based on the ﬂavor of the ﬁnal-state leptons. A signal is observed with a signiﬁcance of 5.6 standard deviations (5.2 expected) with respect to the background-only hypothesis. The measured ﬁducial cross section is 10.2 ± 2.0 fb and this value is consistent with the standard model prediction of 9.1 ± 0.6 fb.
Добавил в систему: Клюхин Вячеслав Иванович

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