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Observation of B0s→K* ± K ∓ and evidence for B0 s→K *−π + decays
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LHCb Collaboration (Including: Back, J. J., Blake, Thomas, Craik, Daniel, Dossett, D., Gershon, T. J., Kreps, Michal, Langenbruch, Christoph, Latham, Thomas, O'Hanlon, Daniel P., Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Wallace, Charlotte and Whitehead, M. (Mark)). (2014) Observation of B0s→K* ± K ∓ and evidence for B0 s→K *−π + decays. New Journal of Physics, Volume 16 (Number ). Article number 123001 . doi:10.1088/1367-2630/16/12/123001 ISSN 1367-2630.
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WRAP_1367-2630_16_12_123001.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution. Download (1189Kb) | Preview |
Official URL: http://dx.doi.org/10.1088/1367-2630/16/12/123001
Abstract
Measurements of the branching fractions of B0s→K*±K∓ and B0s→K*±π∓ decays are performed using a data sample corresponding to − 1.0 fb -1 of proton-proton collision data collected with the LHCb detector at a centre-of-mass energy of 7 TeV, where the K*± mesons are reconstructed in the K0sπ± final state. The first observation of the B0s→K*±K∓ decay and the first evidence for
the B0s→K8-π+ decay are reported with branching fractions
B(B0s→K*±K∓) = (12.7 ± 1.9 ± 1.9) x 10-6
B(B0s→K*-K∓) = (3.3 ± 1.1 ± 0.5) x 10-6
where the first uncertainties are statistical and the second are systematic. In addition, an upper limit of B(B0s→K*±K∓)<0.4 (0.5) × 10-6 is set at 90% (95%) confidence level.
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