Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/52115
Title: Search for the standard model Higgs boson decaying into two photons in pp collisions at √s=7TeV
Authors: Chatrchyan, S., Brochero Cifuentes, J. A., Cabrillo, I. J., Calderón, A., Chuang, S. H., Duarte Campderros, J., Felcini, M., 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., Piedra, Jonatan, Rodrigo, Teresa, Rodriguez Marrero, Ana Y., Ruiz Jimeno, Alberto, Scodellaro, Luca, Sobron Sañudo, M., Vila, Iván, Vilar, Rocío, CMS collaboration
Issue Date: 2012
Publisher: Elsevier
Abstract: A search for a Higgs boson decaying into two photons is described. The analysis is performed using a dataset recorded by the CMS experiment at the LHC from pp collisions at a center-of-mass energy of 7 TeV, which corresponds to an integrated luminosity of 4.8 fb -1. Limits are set on the cross section of the standard model Higgs boson decaying to two photons. The expected exclusion limit at 95% confidence level is between 1.4 and 2.4 times the standard model cross section in the mass range between 110 and 150 GeV. The analysis of the data excludes, at 95% confidence level, the standard model Higgs boson decaying into two photons in the mass range 128 to 132 GeV. The largest excess of events above the expected standard model background is observed for a Higgs boson mass hypothesis of 124 GeV with a local significance of 3.1σ. The global significance of observing an excess with a local significance ≥3.1σ anywhere in the search range 110-150 GeV is estimated to be 1.8σ. More data are required to ascertain the origin of this excess. © 2012 CERN.
Description: 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.2012.03.003
URI: http://hdl.handle.net/10261/52115
Identifiers: doi: 10.1016/j.physletb.2012.03.003
issn: 0370-2693
Citation: Physics Letters 710(3): 403-425 (2012)
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