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Measurement of the ZZ production cross section and search for anomalous couplings in 2l2l' final states in pp collisions at root s=7 TeV

Abstract: A measurement is presented of the ZZ production cross section in the ZZ ? 2`2` 0 decay mode with ` = e, µ and ` 0 = e, µ, ? in proton-proton collisions at ? s = 7 TeV with the CMS experiment at the LHC. Results are based on data corresponding to an integrated luminosity of 5.0 fb?1 . The measured cross section ?(pp ? ZZ) = 6.24 +0.86 ?0.80 (stat.) +0.41 ?0.32 (syst.) ± 0.14 (lumi.) pb is consistent with the standard model predictions. The following limits on ZZZ and ZZ? anomalous trilinear gauge couplings are set at 95% confidence level: ?0.011 < fZ 4 < 0.012, ?0.012 < fZ 5 < 0.012, ?0.013 < f ? 4 < 0.015, and ?0.014 < f ? 5 < 0.014.

Authorship: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V

Fuente: Journal of High Energy Physics, 2013, 1, 63

Publisher: Springer Verlag

Publication date: 01/01/2013

No. of pages: 29

Publication type: Article

DOI: 10.1007/JHEP01(2013)063

ISSN: 1126-6708,1029-8479

Publication Url: https://doi.org/10.1007/JHEP01(2013)063

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