Observation of the B+→D*-K+π+ decay

The B+→D*-K+π+decaypotentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1 . A...

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Detalles Bibliográficos
Autores: Camboni, Alessandro, Coquereau, S., Fernandez, G., Garrido Beltrán, Lluís, Gascon, D., Graciani Diaz, Ricardo, Graugés Pous, Eugeni, Marin Benito, Carla, Picatoste Olloqui, Eduardo, Rives Molina, Vicente José, Sanchez Gonzalo, D., Alfonso Albero, Alejandro, Calvo Gomez, M., Gironella Gironell, P., Vazquez Gomez, R., LHCb Collaboration
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2017
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/186475
Acceso en línea:https://hdl.handle.net/2445/186475
Access Level:acceso abierto
Palabra clave:Hadrons
Gran Col·lisionador d'Hadrons
Física de partícules
Experiments
Large Hadron Collider (France and Switzerland)
Particle physics
Descripción
Sumario:The B+→D*-K+π+decaypotentially provides an excellent way to investigate charm meson spectroscopy. The decay is searched for in a sample of proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1 . A clear signal is observed, and the ratio of its branching fraction to that of the B+→D*-π+π+ normalization channel is measured to be B (B+→D*-K+π+)/B (B+→D*-π+π+)=(6.39 ±0.27 ±0.48 ) ×10-2, where the first uncertainty is statistical and the second is systematic. This is the first observation of the B+→D*-K+π+ decay.

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