The B -> Xs gamma Rate and CP Asymmetry within the Aligned Two-Higgs-Doublet Model
arXiv:1011.5154 · doi:10.1103/PhysRevD.83.074011
Abstract
In the two-Higgs-doublet model the alignment of the Yukawa matrices in flavour space guarantees the absence of flavour-changing neutral currents at tree level, while introducing new sources for CP violation parametrized in a very economical way. This implies potentially large influence in a number of processes, b -> s gamma being a prominent example where rather high experimental and theoretical precision meet. We analyze the CP rate asymmetry in this inclusive decay and determine the resulting constraints on the model parameters. We demonstrate the compatibility with previously obtained limits. Moreover we extend the phenomenological analysis of the branching ratio, and examine the influence of resulting correlations on the like-sign dimuon charge asymmetry in B decays.
12 pages, 6 figures. Submitted to Phys.Rev.D
References in corpus (17)
- Improved Naturalness with a Heavy Higgs: An Alternative Road to LHC Physics
- Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
- Models of Yukawa interaction in the two Higgs doublet model, and their collider phenomenology
- Physics at Super B Factory
- Treating the b quark distribution function with reliable uncertainties
- General Minimal Flavor Violation
- Supersymmetric models with minimal flavour violation and their running
- Analysis of Br(B-->X_s gamma) at NNLO with a Cut on Photon Energy
- Long-Distance Dominance of the CP Asymmetry in B->X_{s,d}+gamma Decays
- Radiative and Electroweak Penguin Decays of B Mesons
- Isospin breaking in Kl4 decays
- Comment on new physics contributions to Gamma_{12}^s
- On theories of enhanced CP violation in B_s,d meson mixing
- Utility of a Special Second Scalar Doublet
- Suppressed FCNC in New Physics with Shared Flavor Symmetry
- QCD Calculations of Radiative B Decays
- An upper limit on CP violation in the system