Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2009-05-20
Phys.Rev.D80:055017,2009
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, 7 figures
Scientific paper
10.1103/PhysRevD.80.055017
We study flavor violating processes in the production or decay of a neutral pseudoscalar meson $P^0$ in the framework of a general two Higgs Doublet Model type III (2HDM-III). We use a version of the model where Yukawa interactions of neutral Higgs bosons allow for flavor change at the tree-level, but conserves CP symmetry. We focus on all possible $\tau^{\pm} \to l^{\pm}P^0 $ and $P^0 \to l^+l'^-$ decay channels, where $l,l'$ are charged leptons. We find that these processes provide complementary information on quark and lepton FCNC Yukawa couplings. In particular flavor violating parameters in the quark sector, $\chi_{sb}$ and $\chi_{db}$, are significantly constrained by present experimental data, whereas the corresponding parameters in the leptonic sector are less constrained.
Gomez-Bock M.
Lopez-Castro G.
Lopez-Lozano L.
Rosado A.
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