Evidence for the decay B+c→J/ψ3π+2π−
Evidence is presented for the decay B+c→J/ψ3π+2π− using proton-proton collision data, corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector. A signal yield of 32 ± 8 decays is found with a significance of 4.5 standard deviations. The ratio of the branching fraction of...
| Autores: | , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dau.url.edu:20.500.14342/3186 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3186 https://doi.org/10.1007/JHEP05(2014)148 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) Protons 539 |
| Sumario: | Evidence is presented for the decay B+c→J/ψ3π+2π− using proton-proton collision data, corresponding to an integrated luminosity of 3 fb−1, collected with the LHCb detector. A signal yield of 32 ± 8 decays is found with a significance of 4.5 standard deviations. The ratio of the branching fraction of the B+c→J/ψ3π+2π− decay to that of the B+c→J/ψπ+ decay is measured to be $ \frac{{\mathcal{B}\left( {\mathrm{B}_{\mathrm{c}}^{+}\to {{\mathrm{J}} \left/ {{\uppsi\;3{\uppi^{+}}2{\uppi^{-}}}} \right.}} \right)}}{{\mathcal{B}\left( {\mathrm{B}_{\mathrm{c}}^{+}\to {{\mathrm{J}} \left/ {{\uppsi\;{\uppi^{+}}}} \right.}} \right)}}=1.74\pm 0.44\pm 0.24, $ where the first uncertainty is statistical and the second is systematic. |
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