Determination of fs/fd for 7 TeV pp collisions and measurement of the B0->D-K+ branching fraction
LHCb Collaboration (Including: Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, M. M., Whitehead, M. (Mark) and Williams, M. P.). (2011) Determination of fs/fd for 7 TeV pp collisions and measurement of the B0->D-K+ branching fraction. Physical Review Letters, Vol.107 (No.21). p. 211801. ISSN 0031-9007
WRAP_Back_Determination_collisions.pdf - Published Version
Available under License Creative Commons Attribution.
Official URL: http://dx.doi.org/10.1103/PhysRevLett.107.211801
The relative abundance of the three decay modes B0→D-K+, B0→D-π+, and Bs0→Ds-π+ produced in 7 TeV pp collisions at the LHC is determined from data corresponding to an integrated luminosity of 35 pb-1. The branching fraction of B0→D-K+ is found to be B(B0→D-K+)=(2.01±0.18stat±0.14syst)×10-4. The ratio of fragmentation fractions fs/fd is determined through the relative abundance of Bs0→Ds-π+ to B0→D-K+ and B0→D-π+, leading to fs/fd=0.253±0.017±0.017±0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.
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