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Tau Weak Dipole Moments from Azimuthal Asymmetries by Vidal, J.; Bernabeu, J.; Gonzalez-Sprinberg, G. is a scholarly article available to read on EtoBox.

What is Tau Weak Dipole Moments from Azimuthal Asymmetries about?

We show that transverse and normal single-$tau$ polarization of $tau$ pairs produced at $e^+$ $e^-$ unpolarized collisions, at the $Z$ peak, are sensitive to weak (magnetic and electric) dipole moments of the $tau$. We also show how these components of the $\tau$ polarization are accessible by measuring appropriate azimuthal asymmetries in the angular distribution of its decay products. Sensitivities of the order of $10^{-18}$ $e\cdot cm$, for the weak-electric dipole moment, and $10^{-4}$ ($10^{-3}$), for the real (imaginary) part of the weak-magnetic dipole moment of $\tau$, may be achieved. Compatible bounds are also presented from spin-spin correlated asymmetries.

Author

Vidal, J.; Bernabeu, J.; Gonzalez-Sprinberg, G.

Published

1998

Language

EN