Measurements of the ZZ production cross sections in the 2l2ν channel in proton–proton collisions at √s = 7 and 8 TeV and combined constraints on triple gauge couplings
Yazarlar (1)
Doç. Dr. Mustafa Numan BAKIRCI Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SCOPUS dergilerinde yayınlanan tam makale)
Dergi Adı European Physical Journal C
Dergi ISSN 1434-6044 Wos Dergi Scopus Dergi
Makale Dili İngilizce Basım Tarihi 10-2015
Cilt / Sayı / Sayfa 75 / 10 / 1–26 DOI 10.1140/epjc/s10052-015-3706-0
Makale Linki https://link.springer.com/content/pdf/10.1140/epjc/s10052-015-3706-0.pdf
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
Measurements of the production cross sections in proton–proton collisions at center-of-mass energies of 7 and 8 are presented. Candidate events for the leptonic decay mode , where denotes an electron or a muon, are reconstructed and selected from data corresponding to an integrated luminosity of 5.1 (19.6) at 7 (8) collected with the CMS experiment. The measured cross sections, $\sigma (\mathrm {p}\mathrm {p}\rightarrow \mathrm{Z}\mathrm{Z}) = 5.1_{-1.4}^{+1.5}\,\text {(stat)} \,_{-1.1}^{+1.4}\,\text {(syst)} \pm 0.1\,\text {(lumi)} \text {~pb} $ at 7 , and $7.2_{-0.8}^{+0.8}\,\text {(stat)} \,_{-1.5}^{+1.9}\,\text {(syst)} \,\pm \, 0.2\,\text {(lumi)} \text {~pb} $ at 8 , are in good agreement with the standard model predictions with next-to-leading-order accuracy. The selected data are analyzed to search for anomalous triple gauge couplings involving the final state. In the absence of any deviation from the standard model predictions, limits are set on the relevant parameters. These limits are then combined with the previously published CMS results for in 4 final states, yielding the most stringent constraints on the anomalous couplings.
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