Measurement of the ratio B(B0s→J/ψf0(980))/B(B0s→J/ψφ(1020)) in pp collisions at √s=7Te

A measurement of the ratio of the branching fractions of the B0s meson to J/ψf0 (980) and to J/ψφ(1020) is presented. TheJ/ψ,f0(980),and φ(1020) are observed through their decays to µ+µ-, p+p-, and K+K-, respectively. The f0and the f are identified by requiring |Mp+p--974MeV| <50MeV and |MK+K--10...

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Detalles Bibliográficos
Autores: Khachatryan, Vladimir, Brochero Cifuentes, Javier Andrés|||0000-0003-2093-7856, Cabrillo Bartolomé, José Iban|||0000-0002-0367-4022, Calderón Tazón, Alicia|||0000-0002-7205-2040, Duarte Campderros, Jorge|||0000-0003-0687-5214, Fernández García, Marcos|||0000-0002-4824-1087, Gómez Gramuglio, Gervasio|||0000-0002-1077-6553, Graziano, Alberto, 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, Rodríguez Marrero, Ana Yaiza, Ruiz Jimeno, Alberto|||0000-0002-3639-0368, Scodellaro, Luca|||0000-0002-4974-8330, Vila Álvarez, Iván |||0000-0002-6797-7209, Vilar Cortabitarte, Rocío|||0000-0003-2045-8054
Tipo de recurso: artículo
Fecha de publicación:2016
País:España
Institución:Universidad de Cantabria (UC)
Repositorio:UCrea Repositorio Abierto de la Universidad de Cantabria
Idioma:inglés
OAI Identifier:oai:repositorio.unican.es:10902/13952
Acceso en línea:http://hdl.handle.net/10902/13952
Access Level:acceso abierto
Descripción
Sumario:A measurement of the ratio of the branching fractions of the B0s meson to J/ψf0 (980) and to J/ψφ(1020) is presented. TheJ/ψ,f0(980),and φ(1020) are observed through their decays to µ+µ-, p+p-, and K+K-, respectively. The f0and the f are identified by requiring |Mp+p--974MeV| <50MeV and |MK+K--1020MeV| <10MeV. The analysis is based on a data sample of pp collisions at a centre-of-mass energy of 7TeV, collected by the CMS experiment at the LHC, corresponding to an integrated luminosity of 5.3fb-1. The measu redratio is B(B0s→J/ψf0) B(f0→π+π−)B (B0s→J/ψφ) B(φ→K+K−) =0.140 ±0.008 (stat) ±0.023 (syst), where the first uncertainty is statistical and the second is systematic.

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