Constraint of the magnetic moment of the top quark

Abstract

We derive a bound on the magnetic dipole moment of the top quark in the context of the effective Lagrangian approach by using the values of the ratio $R_b={\Gamma }_b/{\Gamma }_h$, $R_l={\Gamma }_h/{\Gamma }_l$ and ${\Gamma }_Z$. We found that the oblique corrections are more sensible than the vertex ones for this moment.

6 pages, 3 figures, RevTeX

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• Higgs production as a probe of anomalous top couplings
• Limits on the anomalous $Wtq$ couplings
• Top and bottom tensor couplings from a color octet scalar