Scientific article
Open access

On lepton flavor universality in top quark decays

Published inJournal of High Energy Physics, vol. 1901, 032
  • Open Access - SCOAP3
Publication date2019

We propose a novel strategy to test lepton flavor universality (LFU) in top decays, applicable to top pair production at colliders. Our proposal exploits information in kinematic distributions and mostly hinges on data-driven techniques, thus having very little dependence on our theoretical understanding of top pair production. Based on simplified models accommodating recent hints of LFU violation in charged current B meson decays, we show that existing LHC measurements already provide non-trivial information on the flavor structure and the mass scale of such new physics (NP). We also project that the measurements of LFU in top decays at the high-luminosity LHC could reach a precision at the percent level or below, improving the sensitivity to LFU violating NP in the top sector by more than an order of magnitude compared to existing approaches.

  • Beyond Standard Model
  • Heavy Quark Physics
Citation (ISO format)
KAMENIK, Jernej, KATZ, Andrey, STOLARSKI, Daniel. On lepton flavor universality in top quark decays. In: Journal of High Energy Physics, 2019, vol. 1901, p. 032. doi: 10.1007/JHEP01(2019)032
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Article (Published version)
ISSN of the journal1029-8479

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