The exclusive $B -> (K, K^*) \ell^+ \ell^-$ decays in a CP softly broken two Higgs doublet model

Details The exclusive $B -> (K, K^*) \ell^+ \ell^-$ decays in a CP softly broken two Higgs doublet model The exclusive $B -> (K, K^*) \ell^+ \ell^-$ decays in a CP softly broken two Higgs doublet model

2002-04-18

arxiv.org/abs/hep-ph/0204219v2

Nucl.Phys. B635 (2002) 286-308

Physics

High Energy Physics

High Energy Physics - Phenomenology

23 pages, 26 eps figures, version to appear in Nucl. Phys. B

Scientific paper

We study the differential branching ratio, forward-backward asymmetry, CP-violating asymmetry, CP-violating asymmetry in the forward-backward asymmetry and polarization asymmetries in the $B -> K \ell^+ \ell^-$ and $B -> K^* \ell^+ \ell^-$ decays in the context of a CP softly broken two Higgs doublet model. We analyze the dependencies of these observables on the model parameters by paying a special attention to the effects of neutral Higgs boson (NHB) exchanges and possible CP violating effects. We find that NHB effects are quite significant for both decays. A combined analysis of above-mentioned observables seems to be very promising as a testing ground for new physics beyond the SM, especially for the existence of the CP-violating phase in the theory.

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