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Study of CP asymmetry in B0- B ¯ 0 mixing with inclusive dilepton events

  • Author(s): Lees, JP
  • Poireau, V
  • Tisserand, V
  • Grauges, E
  • Palano, A
  • Eigen, G
  • Stugu, B
  • Brown, DN
  • Kerth, LT
  • Kolomensky, YG
  • Lee, MJ
  • Lynch, G
  • Koch, H
  • Schroeder, T
  • Hearty, C
  • Mattison, TS
  • McKenna, JA
  • So, RY
  • Khan, A
  • Blinov, VE
  • Buzykaev, AR
  • Druzhinin, VP
  • Golubev, VB
  • Kravchenko, EA
  • Onuchin, AP
  • Serednyakov, SI
  • Skovpen, YI
  • Solodov, EP
  • Todyshev, KY
  • Lankford, AJ
  • Mandelkern, M
  • Dey, B
  • Gary, JW
  • Long, O
  • Campagnari, C
  • Franco Sevilla, M
  • Hong, TM
  • Kovalskyi, D
  • Richman, JD
  • West, CA
  • Eisner, AM
  • Lockman, WS
  • Panduro Vazquez, W
  • Schumm, BA
  • Seiden, A
  • Chao, DS
  • Cheng, CH
  • Echenard, B
  • Flood, KT
  • Hitlin, DG
  • Miyashita, TS
  • Ongmongkolkul, P
  • Porter, FC
  • Röhrken, M
  • Andreassen, R
  • Huard, Z
  • Meadows, BT
  • Pushpawela, BG
  • Sokoloff, MD
  • Sun, L
  • Bloom, PC
  • Ford, WT
  • Gaz, A
  • Smith, JG
  • Wagner, SR
  • Ayad, R
  • Toki, WH
  • Spaan, B
  • Bernard, D
  • Verderi, M
  • Playfer, S
  • Bettoni, D
  • Bozzi, C
  • Calabrese, R
  • Cibinetto, G
  • Fioravanti, E
  • Garzia, I
  • Luppi, E
  • Piemontese, L
  • Santoro, V
  • Calcaterra, A
  • De Sangro, R
  • Finocchiaro, G
  • et al.

Published Web Location

https://doi.org/10.1103/PhysRevLett.114.081801Creative Commons 'BY' version 4.0 license
Abstract

© 2015 American Physical Society. We present a measurement of the asymmetry ACP between same-sign inclusive dilepton samples ++ and - (=e, μ) from semileptonic B decays in (4S)→BB¯ events, using the complete data set recorded by the BABAR experiment near the (4S) resonance, corresponding to 471×106 BB¯ pairs. The asymmetry ACP allows comparison between the mixing probabilities P(B¯0→B0) and P(B0→B¯0), and therefore probes CP and T violation. The result, ACP=[-3.9±3.5(stat)±1.9(syst)]×10-3, is consistent with the standard model expectation.

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