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.
Determination of f_{s}/f_{d} for 7 TeV pp Collisions and Measurement of the B^{0}→D^{-}K^{+} Branching Fraction
AURIEMMA, Giulio;SATRIANO, Celestina;
2011-01-01
Abstract
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.File in questo prodotto:
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