We report a search for the decays B- -> K+pi(-)pi(-) and B- -> K-K-pi(+), which are highly suppressed in the standard model. Using a sample of (467 +/- 5) x 10(6) B (B) over bar pairs collected with the BABAR detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of B(B- -> K+pi(-)pi(-)) and < 9.5 x 10(-7) B(B- -> K-K-pi(+)) and < 1.6 x 10(-7) on the corresponding branching fractions, including systematic uncertainties.
Search for the highly suppressed decays B-→K +π-π- and B-→K -K-π+
ANDREOTTI, Mirco;CALABRESE, Roberto;CECCHI, Annalisa;CIBINETTO, Gianluigi;FRANCHINI, Paolo;LUPPI, Eleonora;NEGRINI, Matteo;PETRELLA, Antonio;SANTORO, Valentina;
2008
Abstract
We report a search for the decays B- -> K+pi(-)pi(-) and B- -> K-K-pi(+), which are highly suppressed in the standard model. Using a sample of (467 +/- 5) x 10(6) B (B) over bar pairs collected with the BABAR detector, we do not see any evidence of these decays and determine 90% confidence level upper limits of B(B- -> K+pi(-)pi(-)) and < 9.5 x 10(-7) B(B- -> K-K-pi(+)) and < 1.6 x 10(-7) on the corresponding branching fractions, including systematic uncertainties.File in questo prodotto:
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