Search for first generation scalar leptoquarks in the e?jj channel in pp collisions at vs=7 TeV

A search for pair-production of first generation scalar leptoquarks is performed in the final state con- taining an electron, a neutrino, and at least two jets using proton?proton collision data at ?s = 7 TeV. The data were collected by the CMS detector at the LHC, corresponding to an integrated lum...

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Detalhes bibliográficos
Autores: Chatrchyan, Serguei, Brochero Cifuentes, Javier Andrés|||0000-0003-2093-7856, Cabrillo Bartolomé, José Iban|||0000-0002-0367-4022, Calderón Tazón, Alicia|||0000-0002-7205-2040, Chuang, S. H., Duarte Campderros, Jorge|||0000-0003-0687-5214, Felcini, Marta, Fernández García, Marcos|||0000-0002-4824-1087, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, González Sánchez, Francisco Javier, Jordá Lope, Clara, Lobelle Pardo, Patricia, López Virto, María Amparo, Marco de Lucas, Jesús|||0000-0001-7914-8494, Marco de Lucas, Rafael José, Martínez Rivero, Celso, Matorras Weinig, Francisco|||0000-0003-4295-5668, Muñoz Sánchez, Francisca Javiela, Piedra Gómez, Jonatan|||0000-0002-9157-1700, Rodrigo Anoro, Teresa
Tipo de documento: artigo
Data de publicação:2011
País:España
Recursos:Universidad de Cantabria (UC)
Repositório:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglês
OAI Identifier:oai:repositorio.unican.es:10902/28579
Acesso em linha:https://hdl.handle.net/10902/28579
Access Level:Acceso aberto
Palavra-chave:LHC
CMS
Physics
Exotica
Leptoquarks
Descrição
Resumo:A search for pair-production of first generation scalar leptoquarks is performed in the final state con- taining an electron, a neutrino, and at least two jets using proton?proton collision data at ?s = 7 TeV. The data were collected by the CMS detector at the LHC, corresponding to an integrated luminosity of 36 pb?1. The number of observed events is in good agreement with the predictions for standard model processes. Prior CMS results in the dielectron channel are combined with this electron + neutrino search. A 95% confidence level combined lower limit is set on the mass of a first generation scalar lep- toquark at 339 GeV for ? = 0.5, where ? is the branching fraction of the leptoquark to an electron and a quark. These results represent the most stringent direct limits to date for values of ? greater than 0.05.

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