6533b86dfe1ef96bd12cab98

RESEARCH PRODUCT

τ EDM at low energies

J. VidalGabriel A. González-sprinbergJose Bernabeu

subject

PhysicsNuclear and High Energy PhysicsParticle physicsBranching fractionElementary particleFermionAtomic and Molecular Physics and OpticsHigh Energy Physics - PhenomenologyElectric dipole momentParticle decayPair productionCP violationHigh Energy Physics::ExperimentLepton

description

Low energy tau pair production, at B factories and on top of the $\Upsilon$ resonances, allows for a detailed investigation on the CP violation at the electromagnetic tau pair production vertex. High statistic available at low energies offers the opportunity for an independent analysis of CP-violation in the $\tau$ lepton physics. We show that stringent and independent bounds on the $\tau$ electric dipole moment, competitive with the high energy measurements, can be established in low energies experiments.

https://doi.org/10.1016/s0920-5632(03)80308-0