The possible effects of non-universal extra dimensions ont→cl⁻_il⁺_jandH⁰→h⁰(A⁰)l⁻_il⁺_jdecays in the general two Higgs doublet model

Abstract

We study the effects of non-universal extra dimensions on the decay widths of the lepton flavor violating processes, t → c lHiggs doublet model. We consider that the extra dimensions are accessible to the standard model gauge fields and the new Higgs doublet. We observe that the lepton flavor violating H 0 → h 0 (τ + µ − + τ − µ + ) and H 0 → A 0 (τ + µ − + τ − µ + ) Higgs decays are sensitive to the extra dimensions, especially, in the case of two spatial ones. This result may ensure a test to determine the compactification scale and the possible number of extra dimensions, with the accurate experimental measurements. *

Model-independent constraints on lepton-flavor-violating decays of the top quark

“…Although lepton-flavor-violating decays of the top quark have been explored in some models (see Refs. [10,11,12,13]), decays containing e ± µ ∓ have, so far, not been shown to be substantial. However, as we are doing a model-independent analysis of unknown physics beyond the SM, and as these decays are not experimentally ruled out, we do not take this as an indication that these decays are not experimentally interesting.…”

“…(See also references in [5]; for model-independent analyses, see [6,7,8,9].) Top decays which violate lepton number, meanwhile, have been studied within the context of two-Higgs-doublet models [10,11,12], topcolor models [13], and the MSSM, models with flavon-Higgs mixing, and strongly interacting models [10]. However, in an effort to be as model-independent as possible, we study this decay through an effective operator analysis.…”