Inclusive b-hadron production cross section with muons in pp collisions at √s = 7 TeV

A measurement of the b-hadron production cross section in proton-proton collisions at √ s = 7 TeV is presented. The dataset, corresponding to 85 nb−1 , was recorded with the CMS experiment at the LHC using a low-threshold single-muon trigger. Events are selected by the presence of a muon with transv...

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Detalhes bibliográficos
Autores: Khachatryan, V., Brochero Cifuentes, Javier Andrés|||0000-0003-2093-7856, Cabrillo Bartolomé, José Iban|||0000-0002-0367-4022, Calderón Tazón, Alicia|||0000-0002-7205-2040, Chamizo Llatas, María, 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, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Sobrón Sañudo, Mar, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
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:10902/28403
Acesso em linha:https://hdl.handle.net/10902/28403
Access Level:Acceso aberto
Palavra-chave:Hadron-hadron scattering
Descrição
Resumo:A measurement of the b-hadron production cross section in proton-proton collisions at √ s = 7 TeV is presented. The dataset, corresponding to 85 nb−1 , was recorded with the CMS experiment at the LHC using a low-threshold single-muon trigger. Events are selected by the presence of a muon with transverse momentum p µ T > 6 GeV with respect to the beam direction and pseudorapidity |η µ | < 2.1. The transverse momentum of the muon with respect to the closest jet discriminates events containing b hadrons from background. The inclusive b-hadron production cross section is presented as a function of muon transverse momentum and pseudorapidity. The measured total cross section in the kinematic acceptance is σ(pp → b + X → µ + X0 ) = 1.32 ± 0.01(stat) ± 0.30(syst) ± 0.15(lumi)µb.