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Measurement of the inclusive W and Z production cross sections in pp collisions at vs = 7 TeV with the CMS experiment

Abstract: A measurement of inclusive W and Z production cross sections in pp collisions at ?s = 7 TeV is presented. The electron and muon decay channels are analyzed in a data sample collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 36 pb?1. The measured inclusive cross sections are ?(pp ? WX) × B(W ?`?) = 10.31 ± 0.02 (stat.) ± 0.09 (syst.) ± 0.10 (th.) ± 0.41 (lumi.) nb and ?(pp ? ZX) × B(Z ? `+`?) = 0.974 ± 0.007 (stat.) ± 0.007 (syst.) ± 0.018 (th.) ± 0.039 (lumi.) nb, limited to the dilepton invariant mass range 60 to 120 GeV. The luminosity-independent cross section ratios are (?(pp ? WX) × B(W ? `?)) / (?(pp ? ZX) × B(Z ? `+`?)) =10.54 ± 0.07 (stat.) ± 0.08 (syst.) ± 0.16 (th.) and (?(pp ? W+X) × B(W+ ? `+?)) /(?(pp ? W?X) × B(W? ? ??¯)) = 1.421±0.006 (stat.)±0.014 (syst.)±0.029 (th.). The measured values agree with next-to-next-to-leading order QCD cross section calculations based on recent parton distribution functions.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

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

 Fuente: Journal of High Energy Physics, 2011, 2011(10), 132

Editorial: Springer Verlag

 Fecha de publicación: 01/10/2011

Nº de páginas: 76

Tipo de publicación: Artículo de Revista

 DOI: 10.1007/JHEP10(2011)132

ISSN: 1126-6708,1029-8479

Url de la publicación: https://doi.org/10.1007/JHEP10(2011)132

Autoría

CHATRCHYAN, S.

JAVIER ANDRES BROCHERO CIFUENTES

SHANHUEI CHUANG

MARTA FELCINI

MARCOS FERNANDEZ GARCIA

CLARA JORDA LOPE

PATRICIA LOBELLE PARDO

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO

MARIA DEL MAR SOBRON SAÑUDO