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

J. P. Lees 1 V. Poireau 1 V. Tisserand 1 N. Arnaud 2 M. Davier 2 D. Derkach 2 G. Grosdidier 2 F. Le Diberder 2 A. M. Lutz 2 B. Malaescu 2 P. Roudeau 2 A. Stocchi 2 G. Wormser 2
1 LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules - Laboratoire d'Annecy de Physique des Particules
2 LAL - Laboratoire de l'Accélérateur Linéaire
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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Physical Review D, American Physical Society, 2016, 93, pp.032001. 〈10.1103/PhysRevD.93.032001〉
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Contributeur : Sabine Starita <>
Soumis le : mardi 2 juin 2015 - 10:13:28
Dernière modification le : jeudi 11 janvier 2018 - 06:14:21

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IN2P3 | LAL | LAPP | UGA | UNIV-PARIS-SACLAY

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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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