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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URI: https://hdl.handle.net/10902/28990
ISSN: 1550-7998
ISSN: 1550-2368
ISSN: 2470-0010
ISSN: 2470-0029
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Autoría
Chatrchyan, S.; Brochero Cifuentes, Javier AndrésAutoridad Unican; Cabrillo Bartolomé, José IbanAutoridad Unican; Calderón Tazón, AliciaAutoridad Unican; Chuang, S. H.; Duarte Campderros, JorgeAutoridad Unican; Felcini, Marta; Fernández García, MarcosAutoridad Unican; Gómez Gramuglio, GervasioAutoridad Unican; González Sánchez, Francisco JavierAutoridad Unican; Jordá Lope, Clara; Lobelle Pardo, Patricia; López Virto, María Amparo; Marco de Lucas, JesúsAutoridad Unican; Marco de Lucas, Rafael José; Martínez Rivero, Celso; Matorras Weinig, FranciscoAutoridad Unican; Muñoz Sánchez, Francisca Javiela; Rodrigo Anoro, TeresaAutoridad Unican; [et al.]
Fecha
2012-06
Derechos
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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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 LicenseExcepto si se señala otra cosa, la licencia del ítem se describe como 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