Measurement of the t¯t production cross section in pp collisions at √s=7 TeV in dilepton final states containing a τ
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Identificadores
URI: https://hdl.handle.net/10902/28990ISSN: 1550-7998
ISSN: 1550-2368
ISSN: 2470-0010
ISSN: 2470-0029
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Chatrchyan, S.; Brochero Cifuentes, Javier Andrés; Cabrillo Bartolomé, José Ibán; Calderón Tazón, Alicia; Chuang, S. H.; Duarte Campderros, Jorge; Felcini, Marta; Fernández García, Marcos; Gómez Gramuglio, Gervasio; González Sánchez, Francisco Javier; Jordá Lope, Clara; Lobelle Pardo, Patricia; López Virto, María Amparo; Marco de Lucas, Jesús; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, Francisco; Muñoz Sánchez, Francisca Javiela; Rodrigo Anoro, Teresa; [et al.]Fecha
2012-06Derechos
Atribución 3.0 España. ©2012 CERN, for the CMS Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License
Publicado en
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 85(11), 112007
Editorial
American Physical Society
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Resumen/Abstract
The top quark pair production cross section is measured in dilepton events with one electron or muon, and one hadronically decaying τ lepton from the decay t¯t→(ℓνℓ)(τhντ)b¯b, (ℓ=e,μ). The data sample corresponds to an integrated luminosity of 2.0 fb−1 for the electron channel and 2.2 fb−1 for the muon channel, collected by the CMS detector at the LHC. This is the first measurement of the t¯t cross section explicitly including τ leptons in proton-proton collisions at √s=7 TeV. The measured value σt¯t=143±14(stat)±22(syst)±3(lumi) pb is consistent with the standard model predictions.
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