The Measurement of Time-Dependent CP-Violating Asymmetries in Loop-Dominated B Decays with BABAR

Technical Report · Fri Oct 22 00:00:00 EDT 2004

DOI:https://doi.org/10.2172/839610· OSTI ID:839610

Hoecker, A

We report on preliminary measurements of time-dependent CP asymmetries in neutral B decays to CP eigenstates with transition amplitudes that are dominated by penguin-type loops. The results are obtained from a data sample of up to 227 million {Upsilon}(4S) {yields} B{bar B} decays collected with the BABAR detector at the PEP-II asymmetric-energy B-meson Factory at SLAC. The amplitudes of the effective mixing-induced CP asymmetries, sin2{beta}{sub eff}, are derived from decay-time distributions of events in which one neutral B meson is fully reconstructed in a final state without charm and the other B meson is determined to be either a B{sup 0} or {bar B}{sup 0} from its decay products.

• Research Organization: SLAC National Accelerator Lab., Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC02-76SF00515
• OSTI ID: 839610
• Report Number(s): SLAC-PUB-10815; TRN: US0503578
• Country of Publication: United States
• Language: English

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