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Production of polarized {tau} pairs and tests of CP violation using polarized e{sup {+-}} colliders near threshold

Conference ·
OSTI ID:75464
 [1]
  1. Stanford Univ., CA (United States)
The authors considers the production of {tau} pairs by electron-positron colliding beams at the maximum cross section near the threshold. At this energy {tau} pairs are produced mostly in the s-wave which implies that the spin of the {tau} pairs are almost always pointing in the beam direction independent of the production angle. When both electrons and positrons are longitudinally polarized in the same direction, for example 90%, one can obtain {tau} pairs with 99% polarization in the direction of the polarization vectors of the incident beams. Tests of CP violation and study of the structure of weak interactions using such polarized {tau} pairs are discussed.
Research Organization:
Stanford Linear Accelerator Center, Menlo Park, CA (United States)
DOE Contract Number:
AC03-76SF00515
OSTI ID:
75464
Report Number(s):
SLAC--451; CONF-9408190--; ON: DE95007894
Country of Publication:
United States
Language:
English