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E. O. Iltan

Publications and source records attributed to E. O. Iltan.

At least 37 records · Page 2Linked to original sources
arXiv2005

Lepton flavor violating $Z\to l_1^+ l_2^-$ decay in the general two Higgs Doublet model with the inclusion of non-universal extra dimensions

We predict the branching ratios of Z -> e^{\pm} μ^{\pm}, Z -> e^{\pm} τ^{\pm} and Z -> μ^{\pm} τ^{\pm} decays in the model III version of the two Higgs doublet model, with the inclusion of one and two spatial non-universal extra dimensions. We observe that the the branching ratios are not sensitive to a single extra dimension, however, this sensitivity is considerably large for two extra dimensions.

hep-ph↗
arXiv2005

The Lorentz and CPT violating effects on the Z\to l^+ l^- decay

We study the Lorentz and CPT violating effects on the branching ratio BR, the CPT violating asymmetry A_{CPT} and the ratio of the decay width, including only the Lorentz violating effects, to the one obtained in the standard model, for the flavor dependent part of the lepton flavor conserving Z\to l^+ l^- (l=e,μ,τ) decay. The inclusion of the Lorentz and CPT violating effects to the standard model contribution is too small to be detected, since the corresponding coefficients are highly suppressed at the low energy scale.

hep-ph↗
arXiv2004

The effects of non-universal extra dimensions on the radiative lepton flavor decays μ\to eγand τ\to μγin the two Higgs doublet model

We study the effect of non-universal extra dimensions on the branching ratios of the lepton flavor violating processes μ\to eγand τ\to μγin the general two Higgs doublet model. We observe that these effects are small for a single extra dimension, however, in the case of two extra dimensions there is a considerable enhancement in the additional contributions.

hep-ph↗
arXiv2003

The Lorentz and CPT violating effects on H^0\to f^+ f^- (ZZ, W^+ W^-) decays

We study the Lorentz and CPT violating effects on the ratio \frac{BR_{LorVio}}{BR_{SM}}, where BR_{LorVio} (BR_{SM}) is the branching ratios coming from the Lorentz violating effects (the SM), for the decays H^0\to f^+ f^- (f= quarks and charged leptons) and H^0\to ZZ (W^+ W^-). We observe that these new effects are too small to be detected, especially for f^+ f^- output, since the corresponding coefficients are highly suppressed at the low energy scale.

hep-ph↗
arXiv2003

Anomalous magnetic moment of the muon in the two Higgs doublet model

We calculate the new physics effects on the anomalous magnetic moment of the muon in the framework of the two Higgs doublet model. We predict an upper bound for the lepton flavor violating coupling, which is responsible for the point like interaction between muon and tau, by using the uncertainty in the experimental result of the muon anomalous magnetic moment. We show that the upper bound predicted is more stringent compared to the one which is obtained by using the experimental result of the muon electric dipole moment

hep-ph↗
arXiv2002

B_s -> τ^+ τ^- decay in the general two Higgs Doublet model

We study the exclusive decay B_s -> τ^+ τ^-$ in the general two Higgs doublet model. We analyse the dependencies of the branching ratio on the model parameters, including the leading order QCD corrections. We found that there is an enhancement in the branching ratio, especially for r_{tb}=\frac{\barξ_{N,tt}^U}{\barξ_{N,bb}^D}>1 case. Further, the neutral Higgs effects are detectable for large values of the parameter \barξ_{N,ττ}^D.

hep-ph↗
arXiv2002

t-->b W h^0 and t-->b W A^0 decays and possible CP violating effects

We study the charged t-->b W h^0 and t-->b W A^0 decays in the framework of the general two Higgs doublet model, so called model III and beyond. Here, we take the Yukawa couplings complex and introduce a new complex parameter due to the physics beyond the model III, to switch on the CP violating effects. We predict the branching ratios as BR (t--> b W h^0) ~ 10^{-6} and BR (t--> b W A^0) ~ 10^{-8}. Furthermore, we observe a measurable CP asymmetry, at the order of 10^{-2}, for both decays.

hep-ph↗
arXiv2002

B --> K l^+ l^- decay in the general two Higgs doublet model

We study the branching ratio, CP-violating asymmetry, forward-backward asymmetry and the CP-violating asymmetry in the forward-backward asymmetry for the exclusive decay B--> K l^+ l^-$ in the two Higgs doublet model with tree level flavor changing neutral currents (model III). We analyse the dependencies of these quantities on the neutral Higgs boson contributions and the CP parameter sinθin the model III. We observe that to determine the neutral Higgs boson effects, the measurements of the forward-backward asymmetry and the CP-violating asymmetry in the forward-backward asymmetry for the decay B--> K l^+ l^- are promising.

hep-ph↗
arXiv2002

t -> c H^0 decay in the general two Higgs doublet model

We study the flavor changing t -> c H^0 decay in the framework of the general two Higgs doublet model, so called model III. Here, we take the Yukawa couplings complex and switch on the CP violating effects. We predict the branching ratio six orders larger compared to the one calculated in the SM, namely BR ~ 10^{-7}, and observe a measurable CP asymmetry, at the order of 10^{-2}.

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arXiv2002

Top quark electric and chromo electric dipole moments in the general two Higgs Doublet model

We study the electric and chromo electric dipole moment of top quark in the general two Higgs Doublet model (model III). We analyse the dependency of this quantity to the new phases coming from the complex Yukawa couplings and masses of charged and neutral Higgs bosons. We observe that the electric and chromo elecric dipole moments of top quark are at the order of 10^{-21} e cm and 10^{-20} g_s cm, which are extremely large values compared to ones calculated in the SM and also two Higgs Doublet model with real Yukawa couplings.

hep-ph↗
arXiv2002

The form factors existing in the b->s g^* decay and the possible CP violating effects in the noncommutative standard model

We study the form factors appearing in the inclusive decay b -> s g^*, in the framework of the noncommutative standard model. Here g^* denotes the virtual gluon. We get additional structures and the corresponding form factors in the noncommutative geometry. We analyse the dependencies of the form factors to the parameter pΘk where p (k) are the four momenta of incoming (outgoing) b quark (virtual gluon g^*, Θis a parameter which measures the noncommutativity of the geometry. We see that the form factors are weakly

hep-ph↗
arXiv2001

Lepton flavor violating $Z\to l_1^+ l_2^-$ decay in the general two Higgs Doublet model

We calculate lepton flavor violating Z -> l^+ l^- decay in the framework of the general two Higgs Doublet model. In our calculations we used the constraints for the Yukawa couplings \barξ^{D}_{N,τe} and \barξ^{D}_{N,τμ} coming from the experimental result of muon electric dipole moment and upper limit of the BR(μ-> eγ). We observe that it is possible to reach the present experimental upper limits for the branching ratios of such Z decays in the model III.

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