B-Sector Anomalies—The Top Connection

  • David London
  • Pratishruti SahaEmail author
  • Ryoutaro Watanabe
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 234)


Measurements of B-meson decays have revealed several departures from the Standard Model. In contrast, measurements of top-quark processes seem to adhere strictly to the Standard Model. This presents a conundrum given that the bottom quark and the top quark belong to the same SU(2) doublet. Several models have been proposed in the literature to explain the B-sector anomalies. We confront some such models with top-sector observables to examine whether they can be tested by such measurements.


B-meson decays Top quark production LHC 



P.S. would like to thank George Wei-Shu Hou and Alakabha Datta for useful comments. This work was financially supported in part by NSERC of Canada (D.L. and R.W.). P.S. is supported by the Dept. of Science and Technology, India.


  1. 1.
    R. Aaij et al., LHCb Collaboration. Phys. Rev. Lett. 113, 151601 (2014)ADSCrossRefGoogle Scholar
  2. 2.
    R. Aaij et al., LHCb Collaboration. JHEP 1708, 055 (2017)ADSCrossRefGoogle Scholar
  3. 3.
    R. Aaij et al., LHCb Collaboration. JHEP 1602, 104 (2016); A. Abdesselam et al. [Belle Collaboration], BELLE-CONF-1603, arXiv:1604.04042
  4. 4.
    R. Aaij et al., LHCb Collaboration. JHEP 1509, 179 (2015)ADSCrossRefGoogle Scholar
  5. 5.
    J.P. Lees et al., BaBar Collaboration. Phys. Rev. D 88, 072012 (2013); R. Aaij et al. [LHCb Collaboration] Phys. Rev. Lett. 115, 111803 (2015), Erratum: Phys. Rev. Lett. 115, 159901 (2015)Google Scholar
  6. 6.
    See, for example, J.M. Cline, J.M. Cornell, D. London, R. Watanabe, Phys. Rev. D 95, 095015 (2017) and references thereinGoogle Scholar
  7. 7.
  8. 8.
    J. Kumar, D. London, R. Watanabe, Phys. Rev. D 99, 015007 (2019)ADSCrossRefGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • David London
    • 1
  • Pratishruti Saha
    • 2
    Email author
  • Ryoutaro Watanabe
    • 1
  1. 1.Physique des Particules, Université de MontréalMontréalCanada
  2. 2.Harish-Chandra Research InstituteJhunsi, AllahabadIndia

Personalised recommendations