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

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 M. H. Schune 2 A. Stocchi 2 G. Wormser 2 D. Bernard 3 M. Verderi 3 S. Emery 4 G. Hamel de Monchenault 4 G. Vasseur 4 Ch. Yèche 4 S. Akar 5 E. Ben-Haim 5 M. Bomben 5 G.R. Bonneaud 5 H. Briand 5 G. Calderini 5 J. Chauvau 5 O. Hamon 5 Ph. Leruste 5 G. Marchiori 5 J. Ocariz 5 S. Sitt 5 
1 LAPP - Laboratoire d'Annecy de Physique des Particules
2 LAL - Laboratoire de l'Accélérateur Linéaire
3 LLR - Laboratoire Leprince-Ringuet
4 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
5 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
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
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Submitted on : Monday, May 13, 2013 - 3:59:59 PM
Last modification on : Sunday, June 26, 2022 - 11:58:48 AM

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IN2P3 | CEA | UNIV-PARIS7 | X | UNIV-SAVOIE | UPMC | UGA | LAL | LAPP | LLR | LPNHE | CNRS | X-LLR | X-DEP-PHYS | DSM-IRFU | CEA-DRF | SORBONNE-UNIVERSITE | SU-SCIENCES | UNIV-PARIS | UP-SCIENCES | SU-TI

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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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