Search For Non-Standard Model CP/T violation At Tau-Charm Factory

Abstract

We systematically investigate the possibility of finding CP/T violation in the $\tau$ sector at Tau-Charm Factory. CP/T violation may occur at $\tau$ pair production process, expressed as electric dipole moment, and at $tau$ decay processes. By assuming that electric dipole moment as large as $10^{-19}$e-cm and CP/T violation effect orignating from $\tau$ decay as large as $10^{-3}$ are observable at Tau-Charm Factory, we studied all the possible extensions of the SM which are relevent for generating CP/T violation in $\tau$ sector. And we pointed there are a few kind of models, which are hopeful for generating such CP/T violation. For these models we consider all the theoretical and current experimental constraints and find that there exists some parameter space which will result in a measurable CP/T violation. Therefore we conclude that Tau-Charm Factory is a hopeful place to discover CP/T violation in $\tau$ sector.

30 pages, 2 figures in ps files

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Cited by in corpus (12)

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• Limits on the Electromagnetic and Weak Dipole Moments of the Tau-Lepton in E_6 Superstring Models
• Soft superweak CP violation in a 331 model
• An improved search for the electric dipole moment of the $\tau$ lepton
• Bounding the electromagnetic and weak dipole moments of the tau-lepton in a simplest little Higgs model
• Direct CP violation in ${\tau }^{\pm }\to K^{\pm }{\rho }^0(\omega ){\nu }_{\tau }\to K^{\pm }{\pi }^{+}{\pi }^{-}{\nu }_{\tau }$
• Effective CP-violating operators of the tau lepton and some of their phenomenologies
• Electromagnetic and Weak Moments of the Tau-Lepton
• Spin correlations in $\tau$-lepton pair production due to anomalous magnetic and electric dipole moments
• Sensitivity Study of the Tau Lepton Electric Dipole Moment at the Super Tau-Charm Facility
• Linearly Polarized Photon Fusion as a Precision Probe of the Tau Lepton Dipole Moments at Lepton Colliders
• Mass effect in polarization investigation at BEPC/BES and the B-factory