Acta Physica Polonica B

Vol. 33, No. 5, May 2002, page 1285


Radiative Dileptonic Decays of B-Meson in the General Two Higgs Doublet Model

G. Erkol, G. Turan

We investigate the exclusive B \rightarrow \gamma \ell + \ell - decay in the general two Higgs Doublet Model (model III) including the neutral Higgs boson effects with an emphasis on possible CP-violating effects. For this decay, we analyze the dependencies of the forward--backward asymmetry of the lepton pair, AFB, CP-violating asymmetry, ACP, and the CP-violating asymmetry in forward--backward asymmetry, ACP(AFB), on the model parameters and also on the neutral Higgs boson effects. We have found that AFB\sim 10-1, 10-2, ACP\sim 10-2, 10-1 and ACP(AFB) \sim 10-2, 10-1 depending on the relative magnitude of the Yukawa couplings \bar \xi N,ttU and \bar \xi N,bbD in the model III. We also observe that these physical quantities are sensitive to the model parameters and neutral Higgs boson effects are quite sizable for some values of the coupling \bar \xi N,\tau \tau D.

PACS numbers: 12.60.Fr, 13.20.He


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