Measurement of {Beta}(B{sup 0} {yields} D*{sub s}{sup +}D*{sup -}) and Determination of the D{sub s}{sup +} {yields} {phi}{pi}{sup +} Branching Fraction with a Partial-Reconstruction Method
- SLAC
The authors present model-independent measurements of the branching fractions {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) and {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) based on 19.3 fb{sup -1} of data collected by the BABAR detector at the PEP-II e{sup +}e{sup -} B Factory. Neutral B-meson decays to the D*{sub s}{sup +}D*{sup -} final state are selected with a partial reconstruction of the D*{sub s}{sup +}; that is, only the D*{sup -} and the soft photon from the decay D*{sub s}{sup +} {yields} D{sub s}{sup +}{gamma} are reconstructed. The branching fraction {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) is extracted from these event yields, while {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) is determined by combining this result with a previous measurement of the product {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) x {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) with partial reconstruction of the D*{sup -}. They obtain the following preliminary results: {Beta}(B{sup 0} {yields} D*{sub s}{sup +} D*{sup -}) = (1.50 {+-} 0.16 {+-} 0.12)%, {Beta}(D{sub s}{sup +} {yields} {phi}{pi}{sup +}) = (4.7 {+-} 0.6 {+-} 0.8)% where the first error is statistical, and the second systematic.
- Research Organization:
- Stanford Linear Accelerator Center, Menlo Park, CA (US)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 815248
- Report Number(s):
- SLAC-PUB-10101
- Country of Publication:
- United States
- Language:
- English
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