Measurement of Branching Fractions for Two-body Charmless B Decays to Charged Pions and Kaons at BaBar

BaBar Collaboration, . and , (2000) Measurement of Branching Fractions for Two-body Charmless B Decays to Charged Pions and Kaons at BaBar. In: 30th International Conference, ICHEP 2000, Osaka, Japan, 27 Jul-2 Aug 2000,

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Abstract

We present preliminary results of a search for charmless two-body B decays to charged pions and kaons using data collected by the BABAR detector at the Stanford Linear Accelerator Center's PEP-II storage ring. In a sample of 8.8 million produced B-anti-B pairs we measure the branching fractions B(B^0 --> pi^+pi^-) = (9.3^{+2.6}_{-2.3}^{+1.2}_{-1.4}) x 10^{-6} and B(B^0 --> K^+\pi^-) = (12.5^{+3.0}_{-2.6}^{+1.3}_{-1.7}) x 10^{-6}, where the first uncertainty is statistical and the second is systematic. For the decay B^0 --> K^+K^- we find no significant signal and set an upper limit of B(B^0 --> K^+K^-) < 6.6 x 10^{-6} at the 90% confidence level.

Item Type:Conference Proceedings
Additional Information:Proceedings, 2000. Vol. 1, 2.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Britton, Professor David
Authors: BaBar Collaboration, ., and ,
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:30th International Conference on High-Energy Physics
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