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Download or read book Measurement of the Branching Fractions for the Exclusive Decays of B0 and B+ to Dbar(*)D(*)K. written by and published by . This book was released on 2003 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: The authors report the observation of 823 ± 57 B° and 970 ± 65 B decays to doubly charmed final states {bar D}{sup (*)} D{sup (*)}K, where {bar D}{sup (*)} and D{sup (*)} are fully reconstructed and K is either a K{sup ±} or a K°. They use a sample of 82.3 ± 0.9 million B{bar B} events collected between 1999 and 2002 with the BABAR detector at the PEP-II storage ring at the Stanford Linear Accelerator Center. The 22 possible B decays to {bar D}{sup (*)} D{sup (*)}K are reconstructed exclusively and the corresponding branching fractions or limits are determined. The branching fractions of the B° and of the B to {bar D}{sup (*)} D{sup (*)}K are found to be [Beta](B° 2!{bar D}{sup (*)}D{sup (*)}K) = (4.3 ± 0.3(stat) ± 0.6(sys))%, [Beta](B+ 2!{bar D}{sup (*)} D{sup (*)}K) = (3.5 ± 0.3(stat) {+-} 0.5(syst))%.