Observation of Decays B{sup 0}{yields}D{sub s}{sup (*)+}{pi}{sup -} and B{sup 0}{yields}D{sub s}{sup (*)-}K{sup +}
- Laboratoire de Physique des Particules, F-74941 Annecy-le-Vieux (France)
- Universitat de Barcelona, Facultat de Fisica Dept. ECM, E-08028 Barcelona (Spain)
- Universita di Bari, Dipartimento di Fisica and INFN, I-70126 Bari (Italy)
- Institute of High Energy Physics, Beijing 100039 (China)
- University of Bergen, Institute of Physics, N-5007 Bergen (Norway)
We report the observation of decays B{sup 0}{yields}D{sub s}{sup (*)+}{pi}{sup -} and B{sup 0}{yields}D{sub s}{sup (*)-}K{sup +} in a sample of 230x10{sup 6} {upsilon}(4S){yields}BB events recorded with the BABAR detector at the SLAC PEP-II asymmetric-energy e{sup +}e{sup -} storage ring. We measure the branching fractions B(B{sup 0}{yields}D{sub s}{sup +}{pi}{sup -})=(1.3{+-}0.3(stat){+-}0.2(syst))x10{sup -5}, B(B{sup 0}{yields}D{sub s}{sup -}K{sup +})=(2.5{+-}0.4(stat){+-}0.4(syst))x10{sup -5}, B(B{sup 0}{yields}D{sub s}*{sup +}{pi}{sup -})=(2.8{+-}0.6(stat){+-}0.5(syst))x10{sup -5}, and B(B{sup 0}{yields}D{sub s}*{sup -}K{sup +})=(2.0{+-}0.5(stat){+-}0.4(syst))x10{sup -5}. The significances of the measurements to differ from zero are 5, 9, 6, and 5 standard deviations, respectively. This is the first observation of B{sup 0}{yields}D{sub s}{sup +}{pi}{sup -}, B{sup 0}{yields}D{sub s}*{sup +}{pi}{sup -}, and B{sup 0}{yields}D{sub s}*{sup -}K{sup +} decays.
- OSTI ID:
- 20957673
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 8 Vol. 98; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the branching fractions for B{sup 0{yields}}D{sub s}*{sup +{pi}-} and B{sup 0{yields}}D{sub s}*{sup -}K{sup +} decays
Measurements of branching fractions for B{sup 0}{yields}D{sub s}{sup +}{pi}{sup -} and B{sup 0}{yields}D{sub s}{sup +}K{sup -}