Evidence for the decay BS0→K¯∗0 μ+ μ−
Abstract: A search for the decay B0 s → K ∗0 µ +µ − is presented using data sets corresponding to 1.0, 2.0 and 1.6 fb−1 of integrated luminosity collected during pp collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. An excess is found over the background...
| Autores: | , , , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2018 |
| 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:2445/185384 |
| Acceso en línea: | https://hdl.handle.net/2445/185384 |
| Access Level: | acceso abierto |
| Palabra clave: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
| Sumario: | Abstract: A search for the decay B0 s → K ∗0 µ +µ − is presented using data sets corresponding to 1.0, 2.0 and 1.6 fb−1 of integrated luminosity collected during pp collisions with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, respectively. An excess is found over the background-only hypothesis with a significance of 3.4 standard deviations. The branching fraction of the B0 s → K ∗0 µ +µ − decay is determined to be B(B0 s → K ∗0 µ +µ −) = [2.9 ± 1.0 (stat) ± 0.2 (syst) ± 0.3 (norm)] × 10−8 , where the first and second uncertainties are statistical and systematic, respectively. The third uncertainty is due to limited knowledge of external parameters used to normalise the branching fraction measurement. |
|---|