Hyperfine Interactions

, 239:36 | Cite as

Recent results on CP violation at B factories

  • Sandrine Emery-SchrenkEmail author
  • on behalf of BABAR Collaboration
  • Belle Collaboration
Part of the following topical collections:
  1. Proceedings of the 13th International Conference on Low Energy Antiproton Physics (LEAP 2018) Paris, France, 12-16 March 2018


We review recent results of the Beauty Factories BaBar and Belle on CP violation in the quark sector and constraints on the CKM unitarity triangle. We first present the recent measurement, using BaBar and Belle data, of cos(2β) = cos(2ϕ1) in B0D(∗)h0 with \(D \rightarrow {K^{0}_{S}} \pi ^{+} \pi ^{-}\) decays, using a combined time-dependent Dalitz plot analysis. The BaBar Dalitz plot analysis of the \(B^{+} \rightarrow {K^{0}_{S}} \pi ^{+} \pi ^{0}\) decay is also presented, and shows an evidence for direct CP violation in B+K(892)π0. A recently published BaBar measurement of the |V ub| CKM matrix element allows to contrain one side of the unitarity triangle. These analyses use the data sets of the BaBar and Belle experiments containing 471 × 106 and 772 × 106 \(B\overline {B}\) pairs collected at the Υ(4S) resonance at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively.


CP violation Quark Beauty factories 


14.65.Fy 13.25.Hw 13.20.He 12.15.-y 


  1. 1.
    Charles, J. et al. [CKMFitter Group]:
  2. 2.
    Adachi, I. et al. [BaBar and Belle Collaborations]: arXiv:1804.06152 [hep-ex], submitted to Phys. Rev. Lett.
  3. 3.
    Adachi, I. et al. [BaBar and Belle Collaborations]: arXiv:1804.06153 [hep-ex], submitted to Phys. Rev. D
  4. 4.
    Bondar, A., Gershon, T., Krokovny, O.: A method to measure f1 using \(\overline {B}^{0} \to \mathrm {D}^{(\ast )}\mathrm {h}^{0}\) with multibody D decay. Phys. lett. B 624, 1 (2005)ADSCrossRefGoogle Scholar
  5. 5.
    Aston, D. et al. [LASS Collaboration]: A study of K p + scattering in the reaction Kp →Kp+ n at 11 GeV/c. Nucl. Phys. B 296, 493 (1988)Google Scholar
  6. 6.
    Chung, S.U., et al.: Partial wave analysis in K-matrix formalism. Ann. Phys. 507, 404 (1995)CrossRefGoogle Scholar
  7. 7.
    Lees, J.P. et al. [The BaBar Collaboration]: Phys. Rev. D 96, 072001 (2017)Google Scholar
  8. 8.
    Lees, J.P. et al. [The BaBar Collaboration]: Phys. Rev. D 95, 072001 (2017)Google Scholar
  9. 9.
    Aubert, B. et al. [The BaBar Collaboration]: Phys. Rev. D 73, 012006 (2006)Google Scholar
  10. 10.
    DN: DeFazio, and Neubert: JHEP 9906, 017 (1999). (superceded by BLNP)Google Scholar
  11. 11.
    BLNP: Bosch, Lange, Neubert, Paz: Nucl. 894 Phys. B 699, 335 (2004)Google Scholar
  12. 12.
    GGOU: Gambino, Giordano, Ossola, Uraltsev: JHEP 908(10), 058 (2007)Google Scholar
  13. 13.
    DGE: Andersen, Gardi: JHEP 0601, 097 (2006)Google Scholar

Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Sandrine Emery-Schrenk, IRFU, CEAUniversité Paris-SaclayGif-sur-YvetteFrance
  2. 2.
  3. 3.

Personalised recommendations