Observation of $B^0_s \to K^{*\pm}K^\mp$ and evidence for $B^0_s \to K^{*-}\pi^+$ decays
Measurements of the branching fractions of B0 s → K∗±K∓ and B0 s → K∗±π ∓ decays are performed using a data sample corresponding to 1.0 fb−1 of protonproton collision data collected with the LHCb detector at a centre-of-mass energy of 7 TeV, where the K∗± mesons are reconstructed in the K0 S π ± fin...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universidad de Barcelona |
| Repositorio: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/185691 |
| Acceso en línea: | https://hdl.handle.net/2445/185691 |
| 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: | Measurements of the branching fractions of B0 s → K∗±K∓ and B0 s → K∗±π ∓ decays are performed using a data sample corresponding to 1.0 fb−1 of protonproton collision data collected with the LHCb detector at a centre-of-mass energy of 7 TeV, where the K∗± mesons are reconstructed in the K0 S π ± final state. The first observation of the B0 s → K∗±K∓ decay and the first evidence for the B0 s → K∗−π + decay are reported with branching fractions B B 0 s → K∗±K∓ = (12.7 ± 1.9 ± 1.9) × 10−6 , B B 0 s → K∗−π + = (3.3 ± 1.1 ± 0.5) × 10−6 , where the first uncertainties are statistical and the second are systematic. In addition, an upper limit of B B0→ K∗±K∓ < 0.4 (0.5)×10−6 is set at 90 % (95 %) confidence lev |
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