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Some results on lepton flavour universality violation

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Motivated by recent experimental measurements on flavour physics, in tension with Standard Model predictions, we perform an updated analysis of New Physics violating Lepton Flavour Universality, by using the effective Lagrangian approach and in the Z' and S_3 leptoquark models. We explicitly analyze the impact of considering complex Wilson coefficients in the analysis of B-anomalies, by performing a global fit of R_K and R_K*0 observables, together with \Delta Ms and A_CP^mix. The inclusion of complex couplings provides a slightly improved global fit, and a marginally improved \Delta Ms prediction.

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Società Italiana di Fisica & Springer Verlag

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European Physical Journal C, 2019, num. 79, p. 588

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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Some results on lepton flavour universality violation