Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-05-25
Phys.Rev.D74:053002,2006
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 2 figure
Scientific paper
10.1103/PhysRevD.74.053002
We obtain bounds on the anomalous magnetic and electric dipole moments of the tau-neutrino through the reaction $e^{+}e^{-}\to \nu \bar \nu \gamma$ at the $Z_1$-pole in the framework of a Left-Right symmetric model and a class of $E_6$ inspired models with an additional neutral vector boson $Z_\theta$. We use the data collected by the L3 Collaboration at LEP. For the parameters of the $E_6$ model we consider the mixing angle $\theta_{E_6}=37.8^o$ and $M_{Z_\theta}=7M_{Z_1}$. We find that our bounds are of the same order of magnitude as those obtained in other extensions of the Standard Model.
Gutierrez-Rodriguez A.
Hernandez-Ruiz Maria A.
Jayme-Valdes B.
Perez Anisa M.
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