Inclusive b-jet production in pp collisions at √s = 7 TeV

The inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18 < p T  < 200 GeV for several rapidity...

ver descrição completa

Detalhes bibliográficos
Autores: Chatrchyan, S., Brochero Cifuentes, Javier Andrés|||0000-0003-2093-7856, Cabrillo Bartolomé, José Iban, 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, Rodrigo Anoro, Teresa, Rodríguez Marrero, Ana Yaiza, 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
Formato: artículo
Fecha de publicación:2012
País:España
Recursos:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/28907
Acesso em linha:https://hdl.handle.net/10902/28907
Access Level:acceso abierto
Palavra-chave:Hadron-hadron scattering
Descrição
Resumo:The inclusive b-jet production cross section in pp collisions at a center-of mass energy of 7 TeV is measured using data collected by the CMS experiment at the LHC. The cross section is presented as a function of the jet transverse momentum in the range 18 < p T  < 200 GeV for several rapidity intervals. The results are also given as the ratio of the b-jet production cross section to the inclusive jet production cross section. The measurement is performed with two different analyses, which differ in their trigger selection and b-jet identification: a jet analysis that selects events with a b jet using a sample corresponding to an integrated luminosity of 34 pb−1, and a muon analysis requiring abjetwithamuonbasedonanintegratedluminosityof3pb−1. Inbothapproachestheb jets are identified by requiring a secondary vertex. The results from the two methods are in agreement with each other and with next-to-leading order calculations, as well as with predictions based on the pythia event generator.