tau -> mu(nu)over-bar(i)nu(i) decay in the general two Higgs doublet model

Iltan, EO
Sundu, H
We study tau --> munu(i)nu(i), i = e, mu, tau decay in the model III version of the two Higgs doublet model. We calculated the BR at the order of magnitude 10(-6)-10(-4) for intermediate values of the Yukawa couplings. Furthermore, we predict the upper limit of the coupling for the tau-h(0)(A(0))-tau transition as similar to0.3 in the case that the BR is similar to10(-6). We observe that the experimental result of the process under consideration can give comprehensive information about the physics beyond the standard model and the free parameters existing.


The effects of non-universal extra dimensions on the tau -> mu(nu)over-bar(i)nu(i) decay
Iltan, EO (World Scientific Pub Co Pte Lt, 2005-08-10)
We study tau --> mu(nu) over bar (i)nu(i), i = e, mu, tau decays in the two-Higgs doublet model, with the inclusion of one and two spatial non-universal extra dimensions. We observe that the branching ratio is sensitive to two extra dimensions in contrary to a single extra dimension.
kappa K+pi(-) vertex in light cone QCD sum rules
Baytemir, G.; SARAÇ OYMAK, YASEMİN; Yılmaz, Osman (American Physical Society (APS), 2010-05-01)
In this work we study the kappa K+pi(-) vertex in the framework of light cone QCD sum rules. We predict the coupling constant g kappa K+pi(-) to be g kappa K+pi(-) = (6.0 +/- 1.0) GeV and estimate the scalar f(0) - sigma mixing angle from the experimental ratio g(2)(kappa -> K pi)/g(2)(sigma -> pi pi).
Forward-backward asymmetries in Lambda(b)->Lambda l(+)l(-) decay beyond the standard model
Alıyev, Tahmasıb; Savcı, Mustafa (Elsevier BV, 2005-03-07)
We study the doubly-polarized lepton pair forward-backward asymmetries in Lambda(b) --> Lambdae(+)e(-) decay using a general, model independent form of the effective Hamiltonian. We present the general expression for nine doubly-polarized forward-backward asymmetries. It is observed that, the study of the forward-backward asymmetries of the doubly-polarized lepton pair is a very useful tool for establishing new physics beyond the standard model. Moreover, the con-elation between forward-backward asymmetry a...
Electromagnetic form factors of the rho meson in light cone QCD sum rules
Alıyev, Tahmasıb; Savcı, Mustafa (American Physical Society (APS), 2004-11-01)
We investigate the electromagnetic form factors of the rho meson in light cone QCD sum rules. We find that the ratio of the magnetic and charge form factors is larger than 2 at all values of Q(2), (Q(2)greater than or equal to0.5 GeV2). The values of the individual form factors at fixed values of Q(2) predicted by the light cone QCD sum rules are quite different compared to the results of other approaches. These results can be checked in the future, when more precise data on rho meson form factors is availa...
kappa K*(0)gamma-vertex in light cone QCD sum rules
Gokalp, A.; SARAÇ OYMAK, YASEMİN; Yılmaz Tüzün, Özgül (American Physical Society (APS), 2008-06-01)
We investigate the kappa K*(0)gamma-vertex in the framework of light cone QCD sum rules. We estimate the coupling constant g(kappa K)*(0)gamma, and compare our result with that used in the nonlinear chiral Lagrangian approach using the vector-meson dominance model in the SU(3) limit.
Citation Formats
E. Iltan and H. Sundu, “tau -> mu(nu)over-bar(i)nu(i) decay in the general two Higgs doublet model,” JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, pp. 1373–1382, 2003, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/64600.