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Search for CP Violation in B0B0bar Mixing using Partial Reconstruction of B0-->D*-Xl+ nu and a Kaon Tag

Abstract : We present results of a search for CP violation in B0B0bar mixing with the BABAR detector. We select a sample of B0-->D*-Xl+ nu decays with a partial reconstruction method and use kaon tagging to assess the flavor of the other B meson in the event. We determine the CP violating asymmetry ACP = (N(B0B0) - N(B0bar B0bar))/(N(B0B0) + N(B0bar B0bar))=(0.06+-0.17+0.38-0.32)%, corresponding to delta_CP =1 - |q/p| =(0.29+-0.84+1.88 -1.61)*10^-3.
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http://hal.in2p3.fr/in2p3-00821953
Contributor : Sabine Starita <>
Submitted on : Monday, May 13, 2013 - 3:59:59 PM
Last modification on : Tuesday, June 30, 2020 - 10:00:35 AM

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J. P. Lees, V. Poireau, V. Tisserand, N. Arnaud, M. Davier, et al.. Search for CP Violation in B0B0bar Mixing using Partial Reconstruction of B0-->D*-Xl+ nu and a Kaon Tag. Physical Review Letters, American Physical Society, 2013, 111, pp.101802. ⟨10.1103/PhysRevLett.111.101802⟩. ⟨in2p3-00821953⟩

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