Measurement of the Branching Fractions and CP Asymmetries of B{sup -} --> D{sup 0}{sub (CP)}K{sup -} Decays with the BABAR Detector

Technical Report · Tue Aug 17 00:00:00 EDT 2004

DOI:https://doi.org/10.2172/829786· OSTI ID:829786

Aubert, B

The authors have reconstructed B{sup -} --> D{sup 0}K{sup -} decays with D{sup 0} mesons decaying to non-CP (K{sup -}{pi}{sup +}), CD-even (K{sup -}K{sup +}, {pi}{sup -}{pi}{sup +}) and CP-odd (K{sup 0}{sub s}{pi}{sup 0}) eigenstates. They have measured the CP asymmetries A{sub CP{sup +}} = 0.40 {+-} 0.15(stat) {+-} 0.08(syst), A{sup CP{sup -}} = 0.21 {+-} 0.17(stat) {+-} 0.07(syst), and the double ratio of branching fractions R{sub +} = 0.87 {+-} 0.14(stat) {+-} 0.06(syst), R{sub -} = 0.80 {+-} 0.14(stat) {+-} 0.08(syst). These results improve the previous existing measurements from BABAR. All results presented in this document are preliminary.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 829786
• Report Number(s): SLAC-PUB-10655; TRN: US0405866
• Resource Relation: Other Information: PBD: 17 Aug 2004
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
EIGENSTATES
MESONS
ASYMMETRY
DECAY