Measurement of the tt¯ production cross section in the dilepton channel in pp collisions at √s= 8 TeV

Chatrchyan, Serguei; Brochero Cifuentes, Javier Andrés; Cabrillo Bartolomé, José Iban; Calderón Tazón, Alicia; Chuang, S. H.; Duarte Campderros, Jorge; Fernández García, Marcos; Gómez Gramuglio, Gervasio; González Sánchez, Francisco Javier; Graziano, Alberto; López Virto, María Amparo; Marco de Lucas, Jesús; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, Francisco; Muñoz Sánchez, Francisca Javiela; Piedra Gómez, Jonatan; Rodrigo Anoro, Teresa; Rodríguez Marrero, Ana Yaiza; Ruiz Jimeno, Alberto; Scodellaro, Luca; Vila Álvarez, Iván; Vilar Cortabitarte, Rocío

doi:10.1007/JHEP02(2014)024

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Measurement of the tt ... (808.4Kb)

Identificadores

URI: http://hdl.handle.net/10902/13981

DOI: 10.1007/JHEP02(2014)024

ISSN: 1126-6708

ISSN: 1029-8479

Fecha

2014-02

Derechos

Publicado en

Journal of High Energy Physics, Vol. 2014, Num. 2, Art. Num. 024

Editorial

Springer Verlag

Enlace a la publicación

https://doi.org/10.1007/JHEP02(2014)024

Resumen/Abstract

The top-antitop quark ( tt¯) production cross section is measured in proton-proton collisions at √s = 8 TeV with the CMS experiment at the LHC, using a data sample corresponding to an integrated luminosity of 5.3 fb-1. The measurement is performed by analysing events with a pair of electrons or muons, or one electron and one muon, and at least two jets, one of which is identified as originating from hadronisation of a bottom quark. The measured cross section is 239 ± 2 (stat.) ± 11 (syst.) ± 6 (lum.) pb, for an assumed top-quark mass of 172.5 GeV, in agreement with the prediction of the standard model.

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