τ electric dipole moment with polarized beams
نویسنده
چکیده
High luminosity Super B/Flavor factories, near and on top of the Υ resonances, allow for a detailed investigation of CP-violation in τ physics. In particular, bounds on the τ electric dipole moment can be obtained from CP-odd observables. We perform an independent analysis from other low and high energy data. For polarized electron beam a CP-odd asymmetry, associated to the normal polarization term, can be used to set stringent bounds on the τ electric dipole moment.
منابع مشابه
Measurement of the tau electric dipole moment using longitudinal polarization of e+e- beams.
Certain CP-odd momentum correlations in the production and subsequent decay of τ pairs in e+e− collisions are enhanced significantly when the e+ and e− beams are longitudinally polarized. These may be used to probe the real and imaginary parts of dτ , the electric dipole moment of the τ . Closedform expressions for these “vector correlations” and the standard deviation of the operators defining...
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