Observation of the semileptonic decay B+→ pp¯ μ+νμ

The Cabibbo-suppressed semileptonic decay B→ pp¯ μν is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a functi...

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Detalles Bibliográficos
Autores: LHCb Collaboration, García Martín, L.M., Henry, L., Jashal, B., Martínez-Vidal, Fernando, Oyanguren, Arantza, Remón Alepuz, Clara, Ruiz Vidal, Joan, Sánchez Mayordomo, Carlos
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/233015
Acceso en línea:http://hdl.handle.net/10261/233015
Access Level:acceso abierto
Palabra clave:ddc:530
Descripción
Sumario:The Cabibbo-suppressed semileptonic decay B→ pp¯ μν is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯ invariant mass using the decay mode B→ J/ψK for normalisation. The total branching fraction is measured to be ℬ(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6, where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. [Figure not available: see fulltext.]