Search for nonstandard model CP or T violation at the {tau}-charm factory

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review, D

DOI:https://doi.org/10.1103/PhysRevD.55.1643· OSTI ID:451056

Huang, T; Lu, W; Tao, Z ^[1]

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1. Theory Division, Institute of High Energy Physics, Academia Sinica, P.O. Box 918, Beijing 100039 (China)

We systematically investigate the possibility of finding CP or T violation in the {tau} sector at the {tau}-charm factory. CP or T violation may occur in the {tau} pair production process, expressed as an electric dipole moment, and in {tau} decay processes. By assuming that an electric dipole moment as large as 10{sup {minus}19} ecm and CP or T violation effects originating from {tau} decay as large as 10{sup {minus}3} are observable at the {tau}-charm factory, we study all the possible extensions of the SM which are relevant for generating CP or T violation in the {tau} sector. And we point out, there are a few kinds of models which are hopeful candidates for generating such CP or 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 or T violation. Therefore we conclude that the {tau}-charm factory is a hopeful place to discover CP or T violation in the {tau} sector. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 451056
• Journal Information: Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 55; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
C QUARKS
CP INVARIANCE
CPT THEOREM
ELECTRIC DIPOLE MOMENTS
ELECTRON-POSITRON INTERACTIONS
LEPTONIC DECAY
LIMITING VALUES
PAIR PRODUCTION
T INVARIANCE
TAU PARTICLES
UNIFIED GAUGE MODELS
VIOLATIONS