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Title

Search for high mass resonances decaying into τ -lepton pairs in pp collisions at √s=7 TeV

AuthorsChatrchyan, S.; Brochero Cifuentes, J. A. ; Cabrillo, I. J. ; Cabrillo, I. J. ; Calderon, Alicia ; Chuang, S. H. ; Duarte Campderros, J. ; Felcini, Marta ; Fernández, M. ; Gómez, G. ; González Sánchez, J. ; Jorda, C. ; Lobelle Pardo, P. ; López Virto, A. ; Marco, Jesús ; Marco, Rafael ; Martínez-Rivero, Celso ; Matorras, Francisco ; Muñoz Sánchez, F. J. ; Rodrigo, Teresa ; Rodríguez Marrero, Ana Y. ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Sobron Sañudo, M. ; Vila, Iván ; Vilar, Rocío
Issue Date2012
PublisherElsevier
CitationPhysics Letters B 716(1): 82-102 (2012)
AbstractA search for high-mass resonances decaying into tau-lepton pairs is performed using a data sample of pp collisions at √s=7 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 4.9 inverse femtobarns. The number of observed events is in agreement with the standard model prediction. An upper limit on the product of the resonance cross section and branching fraction into tau-lepton pairs is calculated as a function of the resonance mass. Using the sequential standard model resonance Z ′ SSM and the superstring-inspired E 6 model with resonance Z ′ ψ as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.
Description29 páginas, 2 figuras, 5 tablas.-- This article is published Open Access at sciencedirect.com. It is distributed under the terms of the Creative Commons Attribution License 3.0.-- et al.
Publisher version (URL)http://dx.doi.org/10.1016/j.physletb.2012.07.062
URIhttp://hdl.handle.net/10261/53074
DOI10.1016/j.physletb.2012.07.062
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