Exclusive B --> K^* l^+ l^-$ decay in the three Higgs doublet model

Details Exclusive B --> K^* l^+ l^-$ decay in the three Higgs doublet model Exclusive B --> K^* l^+ l^-$ decay in the three Higgs doublet model

1999-02-27

arxiv.org/abs/hep-ph/9903202v1

Phys.Rev.D61:054001,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

19 pages, 6 figures

Scientific paper

10.1103/PhysRevD.61.054001

We study the differential Branching ratio and CP asymmetry for the exclusive decay B --> K^* l^+ l^- in the three Higgs doublet model with additional global O(2) symmetry in the Higgs sector. We analyse dilepton mass square q^2 dependency of the these quantities. Further, we study the effect of new parameter of the global symmetry in the Higgs sector on the differential branching ratio and CP asymmetry. We see that there exist an enhancement in the branching ratio and a considerable CP violation for the relevant process. In addition to this, we realize that fixing dilepton mass gives information about the sign of the Wilson coefficient C_7^{eff}.Therefore, the future measurements of the CP asymmetry for B\to K^* l^+ l^- decay will give a powerful information about the sign of Wilson coefficient C_{7}^{eff} and new physics beyond the SM.

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