Publication: With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays
With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays
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Fuentes-Martín, J., Isidori, G., Pagès, J., & Yamamoto, K. (2020). With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays. Physics Letters B, 800, 135080. https://doi.org/10.1016/j.physletb.2019.135080
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Motivated by the recent hints of lepton flavor universality violation observed in semileptonic B decays, we analyze how to test flavor and helicity structures of the corresponding amplitudes in view of future data. We show that the general assumption that such non-standard effects are controlled by a flavor symmetry, minimally broken as in the Standard Model Yukawa sector, leads to stringent predictions on leptonic and semileptonic B decays.
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- Fuentes-Martín, Javier
- Pagès, Julie
- Yamamoto, Kei
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Fuentes-Martín, J., Isidori, G., Pagès, J., & Yamamoto, K. (2020). With or without U(2)? Probing non-standard flavor and helicity structures in semileptonic B decays. Physics Letters B, 800, 135080. https://doi.org/10.1016/j.physletb.2019.135080
