Implications of CP violating 2HDM in B physics

Abstract

The charged fermion mass matrices are invariant under $U(1{)}^3$ symmetry linked to the fermion number transformation. Under the condition that the definition of this symmetry in arbitrary weak basis does not depend upon Higgs parameters such as ratio of vacuum expectation values, a class of two Higgs doublet models (2HDM) can be identified in which tree level flavor changing neutral currents normally present in 2HDM are absent. However unlike the type I or type II Higgs doublet models, the charged Higgs couplings in these models contain additional flavor dependent CP violating phases. These phases can account for the recent hints of the beyond standard model CP violation in the $B_d$ and $B_s$ mixing. In particular, there is a range of parameters in which new phases do not contribute to the $K$ meson CP violation but give identical new physics phases in the $B_d$ and $B_s$ meson mixing.

7 pages, 1 figure, Talk given by Bhavik P. Kodrani at 16th International Symposium on Particles, Strings and Cosmology, July 19th - 23rd, 2010, Valencia, Spain

References in corpus (16)

• Yukawa Alignment in the Two-Higgs-Doublet Model
• The Unique Horizontal Symmetry of Leptons
• Measurement of $\boldmath {B_s^0}$ mixing parameters from the flavor-tagged decay
• The Horizontal Symmetry for Neutrino Mixing
• Correlations among new CP violating effects in Delta F = 2 observables
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• Mass Independent Textures and Symmetry
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• Hints for the scale of new CP-violating physics from B-CP anomalies
• CP violation and limits on New Physics including recent $B_s$ measurements
• Complex CKM matrix, spontaneous CP violation and generalized $\mu$-$\tau$ symmetry
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• Higgs induced FCNC as a source of new physics in $b\to s$ transitions
• Minimal flavour violations and tree level FCNC
• B_d and B_s mixing: mass and width differences and CP violation