Seminars IFIC

IFIC Seminar: Lepton universality tests in b decays

by Martín Novoa-Brunet (IJCLab, Orsay)

Online (Online)



Online seminar

Several deviations have been recently observed in b decays by BaBar, Belle and LHCb experiments. These so called b-anomalies, when combined, give some interesting hints of Lepton Flavour Universality Violation. I will give an overview of the current b-anomalies and discuss possible ways of disentangling the dierent NP solutions. I will start by discussing the situation for b→clν decays to then propose a robust test for tensor contributions [1]. Afterwards, I will tackle the b→sll transition, and discuss the NP scenarios of interest [2]. I will present some new ways of testing this transition through baryonic decays [3, 4] and propose a benchmark for some poorly constrained NP scenarios [5].

[1] M. Alguero et al., JHEP 06 (2020), arXiv: 2003.02533.
[2] M. Alguero et al., Eur. Phys. J. C 79.8 (2019), arXiv: 1903.09578.
[3] S. Descotes-Genon and M. Novoa-Brunet, JHEP 06 (2019), arXiv: 1903.00448.
[4] Y. Amhis et al., arXiv: 2005.09602.
[5] S. Descotes-Genon, M. Novoa-Brunet, and K Vos, arXiv: 2008.08000.

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