Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ
Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B 0 s → ϕϕ branching fraction is measured to be B(B0s→ϕϕ)=(1.84±0.05(stat)±0.07(syst)±0.11(fs/fd)±0.12(norm))×10−5, where f s /f d represents the ratio of...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | España |
| Institución: | Universitat Ramon Llull (URL) |
| Repositorio: | DAU Arxiu Digital de la Universitat Ramon Llull |
| OAI Identifier: | oai:dau.url.edu:20.500.14342/3159 |
| Acceso en línea: | http://hdl.handle.net/20.500.14342/3159 https://doi.org/10.1007/JHEP10(2015)053 |
| Access Level: | acceso abierto |
| Palabra clave: | Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
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Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ Badalov, Alexey Calvo Gómez, Míriam Vilasís Cardona, Xavier LHCb Collaboration - CERN Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B 0 s → ϕϕ branching fraction is measured to be B(B0s→ϕϕ)=(1.84±0.05(stat)±0.07(syst)±0.11(fs/fd)±0.12(norm))×10−5, where f s /f d represents the ratio of the B 0 s to B 0 production cross-sections, and the B 0 → ϕK *(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B 0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0→ϕϕ)<2.8×10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit. Springer http://hdl.handle.net/20.500.14342/3159 https://doi.org/10.1007/JHEP10(2015)053 |
| title |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| spellingShingle |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ Badalov, Alexey Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
| title_short |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| title_full |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| title_fullStr |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| title_full_unstemmed |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| title_sort |
Measurement of the B 0 s → ϕϕ branching fraction and search for the decay B 0 → ϕϕ |
| author |
Badalov, Alexey |
| author_facet |
Badalov, Alexey Calvo Gómez, Míriam Vilasís Cardona, Xavier LHCb Collaboration - CERN |
| author_role |
author |
| author2 |
Calvo Gómez, Míriam Vilasís Cardona, Xavier LHCb Collaboration - CERN |
| author2_role |
author author author |
| topic |
Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
| topic_facet |
Gran col·lisionador d'hadrons (França i Suïssa) Partícules (Física nuclear) Col·lisions (Física nuclear) 539 |
| description |
Using a dataset corresponding to an integrated luminosity of 3.0 fb−1 collected in pp collisions at centre-of-mass energies of 7 and 8 TeV, the B 0 s → ϕϕ branching fraction is measured to be B(B0s→ϕϕ)=(1.84±0.05(stat)±0.07(syst)±0.11(fs/fd)±0.12(norm))×10−5, where f s /f d represents the ratio of the B 0 s to B 0 production cross-sections, and the B 0 → ϕK *(892)0 decay mode is used for normalization. This is the most precise measurement of this branching fraction to date, representing a factor five reduction in the statistical uncertainty compared with the previous best measurement. A search for the decay B 0 → ϕϕ is also made. No signal is observed, and an upper limit on the branching fraction is set as B(B0→ϕϕ)<2.8×10−8 at 90% confidence level. This is a factor of seven improvement compared to the previous best limit. |
| publishDate |
2015 |
| format |
article |
| status_str |
publishedVersion |
| url |
http://hdl.handle.net/20.500.14342/3159 https://doi.org/10.1007/JHEP10(2015)053 |
| eu_rights_str_mv |
openAccess |
| publisher |
Springer |
| institution |
Universitat Ramon Llull (URL) |
| collection |
DAU Arxiu Digital de la Universitat Ramon Llull |
| reponame_str |
DAU Arxiu Digital de la Universitat Ramon Llull |
| instname_str |
Universitat Ramon Llull (URL) |
| _version_ |
1878434913853636608 |
| publishDateSort |
2015 |
| author_browse |
Badalov, Alexey Calvo Gómez, Míriam LHCb Collaboration - CERN Vilasís Cardona, Xavier |
| publisherStr |
Springer |
| score |
6,924472 |