Precision measurement of the Bc+ meson mass

A precision measurement of the B+c meson mass is performed using proton- proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb−1. The B+c mesons are reconstructed via the decays B+c → J/ψπ+, B+...

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Detalles Bibliográficos
Autores: LHCb Collaboration, Alfonso Albero, Alejandro, Calvo Gómez, Míriam, Camboni, Alessandro, Coquereau, Samuel, Garrido Beltrán, Lluís, Gascón Fora, David, Gironella Gironell, Pere, Golobardes, Elisabet, Graciani Díaz, Ricardo, Graugés Pous, Eugeni, Manera Escalero, R., Marin Benito, Carla, Vázquez Gómez, Ricard, Vilasis-Cardona, Xavier
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/185314
Acceso en línea:https://hdl.handle.net/2445/185314
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:A precision measurement of the B+c meson mass is performed using proton- proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb−1. The B+c mesons are reconstructed via the decays B+c → J/ψπ+, B+c → J/ψπ+π−π+, B+c→J/ψpp¯¯¯π+, B+c→J/ψD+s, B+c → J/ψ D0K+ and B+c→B0sπ+. Combining the results of the individual decay channels, the B+c mass is measured to be 6274.47 ± 0.27 (stat) ± 0.17 (syst) MeV/c2. This is the most precise measurement of the B+c mass to date. The difference between the B+c and B0s meson masses is measured to be 907.75 ± 0.37 (stat) ± 0.27 (syst) MeV/c.

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