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Measurement of the pp to ZZ production cross section and constraints on anomalous triple gauge couplings in four-lepton final states at sqrt(s) = 8 TeVстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 2 апреля 2015 г.
- Авторы: Belyaev A., Boos E., Bunichev V., Dubinin M., Dudko L., Ershov A., Katkov I., Klyukhin V., Kodolova O., Lokhtin I., Obraztsov S., Petrushanko S., Popov A.A., Savin A., Savrin V., Snigirev A., Zhukov V., CMS Collaboration
- Журнал: Physics Letters B
- Том: 740
- Год издания: 2015
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 250
- Последняя страница: 272
- DOI: 10.1016/j.physletb.2014.11.059
- Аннотация: A measurement of inclusive ZZ production cross section and constraints on anomalous triple gauge couplings in proton-proton collisions at √s = 8 TeV are presented. A data sample, corresponding to an integrated luminosity of 19.6 inverse-femtobarns was collected with the CMS experiment at the LHC. The measurements are performed in the leptonic decay modes ZZ→lll′l′, where l=e,μ and l′=e,μ,τ. The measured total cross section, σ(pp→ZZ)=7.7±0.5(stat.)+0.5−0.4(syst.)±0.4(theo.)±0.2(lum.)pb for both Z bosons produced in the mass range mZ within 60 and 120 GeV, is consistent with standard model predictions. Differential cross sections are measured and well described by the theoretical predictions. The invariant mass distribution of the four-lepton system is used to set limits on anomalous ZZZ and ZZγ couplings at the 95% confidence level: fZ4 in (-0.004,+0.004), fZ5 in (-0.005,+0.005), fγ4 in (-0.004,+0.004), and fγ5 in (-0.005,+0.005).
- Добавил в систему: Лохтин Игорь Петрович