Measurement of the Ξ−b and Ω−b baryon lifetimes

Using a data sample of ppcollisions corresponding to an integrated luminosity of 3fb−1, the Ξ−band Ω−bbaryons are reconstructed in the Ξ−b→J/ψΞ−and Ω−b→J/ψΩ−decay modes and their lifetimes measured to be τ Ξ − b = 1.55+0.10 −0.09 (stat)±0.03 (syst) ps, τ Ω − b = 1.54+0.26 −0.21 (stat)± 0.05 (syst) p...

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Detalles Bibliográficos
Autores: LHCb Collaboration, Adeva Andany, Bernardo, Álvarez Cartelle, Paula, Dosil Suárez, Álvaro, Fernández Albor, Víctor Manuel, Gallas Torreira, Abraham Antonio, Hernando Morata, José Ángel, Pazos Álvarez, Antonio, Plo Casasus, Máximo, Romero Vidal, Antonio, Saborido Silva, Juan José, Sanmartín Sedes, Brais, Santamarina Ríos, Cibrán, Seco Miguélez, Marcos Antonio, Vázquez Regueiro, Pablo, Vázquez Sierra, Carlos, Vieites Díaz, María
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universidad de Santiago de Compostela (USC)
Repositorio:Minerva. Repositorio Institucional de la Universidad de Santiago de Compostela
Idioma:inglés
OAI Identifier:oai:minerva.usc.gal:10347/22143
Acceso en línea:http://hdl.handle.net/10347/22143
Access Level:acceso abierto
Descripción
Sumario:Using a data sample of ppcollisions corresponding to an integrated luminosity of 3fb−1, the Ξ−band Ω−bbaryons are reconstructed in the Ξ−b→J/ψΞ−and Ω−b→J/ψΩ−decay modes and their lifetimes measured to be τ Ξ − b = 1.55+0.10 −0.09 (stat)±0.03 (syst) ps, τ Ω − b = 1.54+0.26 −0.21 (stat)± 0.05 (syst) ps. These are the most precise determinations to date. Both measurements are in good agreement with previous experimental results and with theoretical predictions

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