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Search for mixing-induced CP violation using partial reconstruction of B0bar -> D*-Xl-nubar and kaon tagging

Abstract : We describe in detail a recently published measurement of CP violation induced by B0-anti B0 oscillations, based on an integrated luminosity of 425.7 inverse fb collected by the BABAR experiment at the PEPII collider. We apply a novel technique to a sample of about 6 million B0 decays to D star l nu selected with partial reconstruction of the D star meson. The charged lepton identifies the flavor of one B meson at its decay time, the flavor of the other B is determined by kaon tagging. We determine a CP violating asymmetry ACP = (0.0006 +- 0.0017 + 0.0038 - 0.0032). This measurement is consistent and competitive with those obtained at the B factories with dilepton events.
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http://hal.in2p3.fr/in2p3-01158904
Contributor : Sabine Starita <>
Submitted on : Tuesday, June 2, 2015 - 10:13:28 AM
Last modification on : Friday, November 6, 2020 - 3:26:49 AM

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J. P. Lees, V. Poireau, V. Tisserand, N. Arnaud, M. Davier, et al.. Search for mixing-induced CP violation using partial reconstruction of B0bar -> D*-Xl-nubar and kaon tagging. Physical Review D, American Physical Society, 2016, 93, pp.032001. ⟨10.1103/PhysRevD.93.032001⟩. ⟨in2p3-01158904⟩

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