2000/08/23 by The BABAR Collaboration, B. Aubert, Aubert, B.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0008057
21 pages, 9 postscript figures, contributed paper to ICHEP2000
arxiv created 2000/08/23 · arxiv updated 2009/11/30
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(B0 --> pi+pi-) = (9.3+2.6-2.3+1.2-1.4) x 10-6 and B(B0 --> K+π-) = (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 B0 --> K+K- we find no significant signal and set an upper limit of B(B0 --> K+K-) < 6.6 x 10-6 at the 90% confidence level.