Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/52120
Título : Search for the Standard Model Higgs Boson in the Decay Channel H→ZZ→4l in pp Collisions at √s=7  TeV
Autor : 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., Rodrigo, Teresa, Rodriguez Marrero, Ana Y., Ruiz Jimeno, Alberto, Scodellaro, Luca, Sobron Sañudo, M., Vila, Iván, Vilar, Rocío, CMS Collaboration
Fecha de publicación : 2012
Editor: American Physical Society
Citación : Physical Review Letters 108(11): 111804 (2012)
Resumen: A search for a Higgs boson in the four-lepton decay channel H→ZZ, with each Z boson decaying to an electron or muon pair, is reported. The search covers Higgs boson mass hypotheses in the range of 110<m H< 600GeV. The analysis uses data corresponding to an integrated luminosity of 4.7fb -1 recorded by the CMS detector in pp collisions at √s=7TeV from the LHC. Seventy-two events are observed with four-lepton invariant mass m 4->100GeV (with 13 below 160GeV), while 67.1±6.0 (9.5±1.3) events are expected from background. The four-lepton mass distribution is consistent with the expectation of standard model background production of ZZ pairs. Upper limits at 95% confidence level exclude the standard model Higgs boson in the ranges of 134-158GeV, 180-305GeV, and 340-465GeV. Small excesses of events are observed around masses of 119, 126, and 320GeV, making the observed limits weaker than expected in the absence of a signal. © 2012 CERN.
Versión del editor: http://dx.doi.org/10.1103/PhysRevLett.108.111804
URI : http://hdl.handle.net/10261/52120
Identificadores: doi: 10.1103/PhysRevLett.108.111804
issn: 0031-9007
e-issn: 1079-7114
Appears in Collections:(IFCA) Artículos

Files in This Item:
File Description SizeFormat 
Search for the Standard Model Higgs.pdf567,19 kBAdobe PDFView/Open
Show full item record
 
CSIC SFX LinksSFX Query

Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.