Radiative dileptonic decays of B-meson in the general two Higgs Doublet Model

Date

2002-05-01

Author

Erkol, G
Turan, Gürsevil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

155
views

0
downloads

We investigate the exclusive B --> gammal(+)l(-) 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, A(FB), CP-violating asymmetry, A(CP), and the CP-violating asymmetry in forward-backward asymmetry, A(CP)(A(FB)), on the model parameters and also on the neutral Higgs boson effects. We have found that A(FB) similar to 10(-1), 10(-2), A(CP) similar to 10(-2), 10(-1) and A(CP)(A(FB)) similar to 10(-2), 10(-1) depending on the relative magnitude of the Yukawa couplings (ξ) over bar (U)(N,tt) and (ξ) over bar (D)(N,bb) 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 (ξ) over bar (D)(N,tautau).

Subject Keywords

Changing neutral currents, Light-cone QCD, B->S-gamma decay

URI

https://hdl.handle.net/11511/54814

Journal

ACTA PHYSICA POLONICA B

Collections

Department of Physics, Article

Suggestions

OpenMETU
Core

B-s ->gamma gamma decay in two and three Higgs doublet models with CP violating effects Boz, M; Iltan, EO (2000-09-01) We analyze the CP asymmetry for B-s-->gamma gamma in the two Higgs doublet model with tree level flavor changing currents (model III) and the three Higgs doublet model with O-2 symmetry in the Higgs sector, including O-7 type long distance effects. Further, we study the dependencies of the branching ratio Br (B-s-->gamma gamma) and the ratio of CP-even and CP-odd amplitude squares, R = \A(+)\(2)/\A(-)\(2), on the CP parameter sin theta. We find that there is a weak CP asymmetry at the order of 10(-4). In ad...
Rare radiative B-s -> tau(+) tau(-) gamma decay in the two Higgs doublet model Iltan, EO; Turan, Gürsevil (2000-02-01) The radiative B-s-->tau(+)tau(-)gamma decay is investigated in the framework of the two Higgs doublet model. The dependence of the differential branching ratio on the photon energy and the branching ratio on the two Higgs doublet model parameters m(H+) and tan beta are studied. It is shown that there is an enhancement in the predictions of the two Higgs doublet model compared to the standard model case. We also observe that contributions of neutral Higgs bosons to the decay are sizable when tan beta is large.
Magnetic properties of multiband U=infinity Hubbard model on anisotropic triangular and rectangular lattice strips CHERANOVSKII, VO; Esentürk, Okan; PAMUK, HO (1998-11-01) We study the dependence of the ground state spin of a multiband Hubbard model with infinite electron repulsion on anisotropic triangular and rectangular lattice strips on the model parameters. Considering the results of numerical calculations for the exact spectra of finite triangular lattice strips at different values of hopping integrals, we show the existence of a type of magnetic transitions with the jump of the ground state spin between minimal and maximal values. This transition is found only for spec...
B-s ->tau(+)tau(-)gamma decay in the general two Higgs doublet model including the neutral Higgs boson effects Erkol, G; Turan, Gürsevil (2002-05-01) We investigate the differential branching ratio, the branching ratio, differential forward-backward asymmetry, forward-backward asymmetry of the lepton pair, and lepton polarization asymmetry of the exclusive B-s-->tau(+)tau(-)gamma decay in the general two Higgs doublet model including the neutral Higgs boson effects. We analyze the dependences of these quantities on the model parameters and also on the neutral Higgs boson effects. We find that they get considerable enhancement from the two Higgs doublet m...
The exclusive B-s ->phi l(+)l(-) decay in the two Higgs doublet models Erkol, G; Turan, Gürsevil (2002-11-01) We study the differential branching ratio, the branching ratio and the forward-backward asymmetry for exclusive B-s --> phil(+)l(-) decay in the two Higgs doublet model. We analyze the dependences of these quantities on the model parameters and show that these observables are highly sensitive to new physics and hence may provide a powerful probe of the SM and beyond.

Citation Formats

G. Erkol and G. Turan, “Radiative dileptonic decays of B-meson in the general two Higgs Doublet Model,” ACTA PHYSICA POLONICA B, pp. 1285–1311, 2002, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54814.