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...
| Authors: | , , , , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 2014 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/185691 |
| Online Access: | https://hdl.handle.net/2445/185691 |
| Access Level: | Open access |
| Keyword: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Large Hadron Collider (France and Switzerland) Particle physics |
| Summary: | 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 |
|---|