The relative abundance of the three decay modes B(0) -> D(-)K(+), B(0) -> D(-)pi(+), and B(s)(0) -> D(s)(-)pi(+) 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 B(0) -> D(-)K(+) is found to be B(B(0) -> D(-)K(+)) = (2.01 +/- 0.18(stat) +/- 0.14(syst)) x 10(-4). The ratio of fragmentation fractions f(s)/f(d) is determined through the relative abundance of B(s)(0) -> D(s)(-)pi(+) to B(0) -> D(-)K(+) and B(0) -> D(-)pi(+), leading to f(s)/f(d) = 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
Dettori F;Lai A;MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;SAITTA, BIAGIO;
2011-01-01
Abstract
The relative abundance of the three decay modes B(0) -> D(-)K(+), B(0) -> D(-)pi(+), and B(s)(0) -> D(s)(-)pi(+) 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 B(0) -> D(-)K(+) is found to be B(B(0) -> D(-)K(+)) = (2.01 +/- 0.18(stat) +/- 0.14(syst)) x 10(-4). The ratio of fragmentation fractions f(s)/f(d) is determined through the relative abundance of B(s)(0) -> D(s)(-)pi(+) to B(0) -> D(-)K(+) and B(0) -> D(-)pi(+), leading to f(s)/f(d) = 0.253 +/- 0.017 +/- 0.017 +/- 0.020, where the uncertainties are statistical, systematic, and theoretical, respectively.
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