Weak dipole Moment of τ in e<SUP>+</SUP>e<SUP>−</SUP> collisions with longitudinally polarized electrons
- Ananthanarayan, B.
- Rindani, Saurabh D.
Publication date
August 1994
DOI Publisher
American Physical Society (APS) Language
EnglishAbstract
It is pointed out that certain CP-odd momentum correlations in the production and subsequent decay of tau pairs in e+e− collisions get enhanced when the e− is longitudinally polarized. Analytic expressions for these correlations are obtained for the single-pion decay mode of τ when τ+τ− have a "weak" dipole form factor (WDFF) coupling to Z. For e+e− collisions at the Z peak, a sensitivity of about (1−5)×10−17 e cm for the τ WDFF can be reached using a single τ+τ− decay channel, with 106 Z's likely to be available at the Stanford Linear Collider with e− polarization of 62%-75%
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