Determination of fs/fd for 7 TeV pp collisions and measurement of the B0->D-K+ branching fraction
Back, J. J., Dossett, D., Gershon, T. J., Harrison, P. F., Latham, Thomas, Pilar, T., Poluektov, Anton, Reid, Matthew 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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