Observation of B+→J/ψ3π+2π− and B+→ψ(2S)π+π+π− decays

The decays B+→J/ψ3π+2π− and B+→ψ(2S)π+π+π− are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in proton–proton collisions at the centre-of-mass energies of 7 and 8TeV. The branching fractions relative to that of...

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Detalhes bibliográficos
Autores: LHCb Collaboration, Adeva Andany, Bernardo, Borsato, Martino, Chobanova, Veronika, Cid Vidal, Xabier, Dosil Suárez, Álvaro, Fernández Prieto, Antonio, García Pardiñas, Julián, Hernando Morata, José Ángel, Lemos Cid, Edgar, Lucio Martínez, Miriam, Martínez Santos, Diego, Plo Casasus, Máximo, Prisciandaro, Jessica, Ramos Pernas, Miguel, Romero Vidal, Antonio, Saborido Silva, Juan José, Sanmartín Sedes, Brais, Santamarina Ríos, Cibrán, Vázquez Regueiro, Pablo, Vieites Díaz, María, Vázquez Sierra, Carlos
Formato: artículo
Fecha de publicación:2017
País:España
Recursos: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:10347/22236
Acesso em linha:http://hdl.handle.net/10347/22236
Access Level:acceso abierto
Descrição
Resumo:The decays B+→J/ψ3π+2π− and B+→ψ(2S)π+π+π− are observed for the first time using a data sample corresponding to an integrated luminosity of 3.0 fb−1, collected by the LHCb experiment in proton–proton collisions at the centre-of-mass energies of 7 and 8TeV. The branching fractions relative to that of B+→ψ(2S)K+ are measured to be B(B+→J/ψ3π+2π−)B(B+→ψ(2S)K+)=B(B+→ψ(2S)π+π+π−)B(B+→ψ(2S)K+)=(1.88±0.17±0.09)×10−2,(3.04±0.50±0.26)×10−2, where the first uncertainties are statistical and the second are systematic.

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