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Measurement of inclusive and differential cross sections for W+W− production in proton-proton collisions at √s= 13.6 TeVстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Boos E., Bunichev V., Dubinin M., Dudko L., Gribushin A., Klyukhin V., Kodolova O., Lukina O., Obraztsov S., Perfilov M., Savrin V., Snigirev A., CMS Collaboration
- Журнал: Physics Letters B
- Том: 861
- Год издания: 2025
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 139231
- DOI: 10.1016/j.physletb.2024.139231
- Аннотация: Measurements at √𝑠 = 13.6 TeV of the opposite-sign W boson pair production cross section in proton-proton collisions are presented. The data used in this study were collected with the CMS detector at the CERN LHC in 2022, and correspond to an integrated luminosity of 34.8fb−1. Events are selected by requiring one electron and one muon of opposite charge. A maximum likelihood fit is performed on signal- and background-enriched data categories defined by the flavor and charge of the leptons, the number of jets, and number of jets originating from b quarks. The overall sensitivity is significantly better than that of previous results with a similar integrated luminosity. The improvement comes from a more refined control of experimental uncertainties and an improved fit strategy. An inclusive W+W− production cross section of 125.7±5.6 pb is measured, in agreement with standard model predictions. Cross sections are also reported in a fiducial region close to that of the detector acceptance, both inclusively and differentially, as a function of the jet multiplicity in the event. For the first time in proton-proton collisions, WW events with zero, one, and at least two jets are studied simultaneously and compared with recent theoretical predictions.
- Добавил в систему: Клюхин Вячеслав Иванович
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