Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2010-12-22
Phys.Rev.D83:031103,2011
Physics
High Energy Physics
High Energy Physics - Experiment
8 pages, 3 postscript figures submitted to Physical Review D (Rapid Communications)
Scientific paper
10.1103/PhysRevD.83.031103
We present measurements of partial branching fractions of $B \rightarrow K^+ X$, $B \rightarrow K^0 X$, and $B \rightarrow \pi^+ X$, where $X$ denotes any accessible final state above the endpoint for B decays to charmed mesons, specifically for momenta of the candidate hadron greater than 2.34 (2.36) GeV for kaons (pions) in the B rest frame. These measurements are sensitive to potential new-physics particles which could enter the $b \rightarrow s(d)$ loop transitions. The analysis is performed on a data sample consisting of $383 \times 10^6$ $B \bar{B}$ pairs collected with the BaBar detector at the PEP-II $e^+e^-$ asymmetric energy collider. Our results are in agreement with standard model predictions and exclude large enhancements of the inclusive branching fraction due to sources of new physics.
"The BABAR Collaboration
Amo Sanchez del P.
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