期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 10, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP10(2010)009
关键词
Higgs Physics; Rare Decays; Beyond Standard Model; B-Physics
资金
- Galileo Galilei Institute for Theoretical Physics
- Cluster of Excellence 'Origin and Structure of the Universe'
- DFG [Graduiertenkolleg GRK 1054]
- German 'Bundesministerium fur Bildung und Forschung' [05H09WOE]
- EU Marie Curie Research Training Network [MTRN-CT-2006-035482, MRTN-CT-2006-035505]
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 B-s,B-d -> mu(+)mu(-). We demonstrate that, introducing flavour-blind CP phases, two-Higgs doublet models respecting the MFV hypothesis can accommodate a large CP-violating phase in B-s 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 epsilon(K) and S-psi KS.
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