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Open Access item Search for supersymmetry in events with a lepton, a photon, and large missing transverse energy in pp collisions at root s=7 TeV

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:2011
Publisher:Springer
Citation:Journal of High Energy Physics 6: 93 (2011)
Abstract:A search is performed for an excess of events, over the standard model expectations, with a photon, a lepton, and large missing transverse energy in pp collisions at Ös = 7TeV. Such events are expected in many new physics models, in particular a supersymmetric theory that is broken via a gauge-mediated mechanism, when the lightest charged and neutral gauginos are mass degenerate. The data sample used in this search corresponds to an integrated luminosity of 35 pb-1 collected with the CMS detector at the LHC. No evidence of such an excess above the standard model backgrounds, dominated by W production, is found. The results are presented as 95% confidence level upper limits on the cross section for a benchmark gauge-mediated scenario, and are then converted into exclusion limits on the squark, gluino, and wino masses.
URI:http://hdl.handle.net/10261/52109
Identifiers:doi: 10.1007/JHEP06(2011)093
issn: 1029-8479
Appears in Collections:(IFCA) Artículos

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