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The measurement of time-dependent CP-violating asymmetries in loop-dominated B decays with BABAR

Abstract : 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)->BB-bar 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, sin(2beta)_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 B0 or B0-bar from its decay products.
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http://hal.in2p3.fr/in2p3-00023530
Contributor : Sabine Starita <>
Submitted on : Thursday, January 6, 2005 - 4:00:33 PM
Last modification on : Wednesday, October 14, 2020 - 4:00:41 AM

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Andreas Höcker. The measurement of time-dependent CP-violating asymmetries in loop-dominated B decays with BABAR. 32nd International Conference on High Energy Physics "ICHEP 04", Aug 2004, Beijing, China. ⟨in2p3-00023530⟩

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