Search for the standard model Higgs boson decaying into two photons in pp collisions at vs=7TeV
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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
2012-04Derechos
Atribución-NoComercial-SinDerivadas 3.0 España. ©2012 CERN for the benefit of the CMS Collaboration. Published by Elsevier B.V. Open access under CC BY-NC-ND license.
Publicado en
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2012, 710(3), 403-425
Editorial
Elsevier
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Palabras clave
CMS
Physics
Higgs
Resumen/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 3.1? . The global significance of observing an excess with a local significance 3.1?
anywhere in the search range 110?150 GeV is estimated to be 1.8? . More data are required to ascertain
the origin of this excess.
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