Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2445/132633

Título:	First Observation of the Rare Purely Baryonic Decay B0→p¯p
Autor/a:	Alfonso Albero, Alejandro; Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Coquereau, Samuel; Fernandez, G.; Garrido Beltrán, Lluís; Gascón Fora, David; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Marin Benito, Carla; Picatoste Olloqui, Eduardo; Rives Molina, Vicente José; Vilasis-Cardona, Xavier; LHCb Collaboration
Otros autores:	Universitat de Barcelona
Abstract:	The first observation of the decay of a B0 meson to a purely baryonic final state, B0→p p ¯ , is reported. The proton-proton collision data sample used was collected with the LHCb experiment at center-of-mass energies of 7 and 8 TeV and corresponds to an integrated luminosity of 3.0 fb-1. The branching fraction is determined to be B (B0→p p ¯ )=(1.25 ±0.27 ±0.18 )×10-8 , where the first uncertainty is statistical and the second systematic. The decay mode B0→p p ¯ is the rarest decay of the B0 meson observed to date. The decay Bs0→p p ¯ is also investigated. No signal is seen and the upper limit B (Bs0→p p ¯ )<1.5 ×10-8 at 90% confidence level is set on the branching fraction.
Materia(s):	-Física de partícules -Experiments -Particle physics -Experiments
Derechos:	cc by (c) CERN; LHCb Collaboration, 2017 http://creativecommons.org/licenses/by/3.0/es/
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	American Physical Society
Compartir:

Mostrar el registro completo del ítem