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Search for the decay Bs0→D*∓π±
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LHCb Collaboration (Including: Back, J. J., Craik, Daniel, Dossett, D., Gershon, T. J., Harrison, P. F., Kreps, Michal, Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew M., Silva Coutinho, R., Whitehead, M. (Mark) and Williams, M. P.). (2013) Search for the decay Bs0→D*∓π±. Physical Review D (Particles, Fields, Gravitation and Cosmology), 87 (7). 071101. doi:10.1103/PhysRevD.87.071101 ISSN 1550-7998.
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Text
WRAP_LCHb_PhysRevD.87.071101.pdf - Published Version Available under License Creative Commons Attribution. Download (660Kb) | Preview |
Official URL: http://dx.doi.org/10.1103/PhysRevD.87.071101
Abstract
A search for the decay Bs0→D*∓π± is presented using a data sample corresponding to an integrated luminosity of 1.0 fb-1 of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as Bs0→π+π- and Bs0→DD- . Systematic uncertainties are minimized by using B0→D*∓π± as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(Bs0→D*∓π±)<6.1(7.8)×10-6 at 90% (95%) confidence level.
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