Higgs-mediated FCNCs: natural flavour conservation vs. minimal flavour violation
By Andrzej Buras, Maria Valentina Carlucci, Stefania Gori, G. Isidori. 2010
203 citations recorded by the source corpus.
We compare the effectiveness of two hypotheses, Natural Flavour Conservation (NFC) and Minimal Flavour Violation (MFV), in suppressing the strength of flavour-changing neutral-currents (FCNCs) in models with more than one Higgs doublet. We show that the MFV hypothesis, in its general formulation, is more stable in suppressing FCNCs than the hypothesis of NFC alone when quantum corrections are taken into account. The phenomenological implications of the two scenarios are discussed analysing meson-antimeson mixing observables and the rare decays Bs,d → μ+μ−. We demonstrate that, introducing flavour-blind CP phases, two-Higgs doublet models respecting the MFV hypothesis can accommodate a large CP-violating phase in Bs mixing, as hinted by CDF and D0 data and, without extra free parameters, soften significantly in a correlated manner the observed anomaly in the relation between εK and $ {S_{\psi {K_S}}} $.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/5048e05240579e1c63f2e5c1f0f4cfa02946ce5b
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In Nuclear and High Energy Physics
Citations in the corpus
- Charged Lepton Flavour Violation: An Experimental and Theoretical Introduction (2017, background): “Less radical approaches – but effective in suppressing FCNC processes at acceptable levels – consist in imposing the ansatz of minimal flavour violation [83] to the Yukawa couplings [84] (which implies that the new physics flavour-violating effects are controlled by the CKM matrix, as the SM contrib”
- Charged-Higgs phenomenology in the aligned two-Higgs-doublet model (2010, background): “[141] analyzes the strength of FCNC effects mediated by neutral scalars in minimal-flavour-violation models containing two Higgs doublets.”
- Implications of LHCb measurements and future prospects - eScholarship (2013, methodology): “It is also possible to obtain predictions for B(B0 s → μμ)SM with reduced sensitivity to the value of fBs using input from either ∆ms [117] or from a full CKM fit [118].”