[SLAC] [SLAC Pubs and Reports]
SLAC-PUB-7823
Symmetry Tests in Polarized Z0 Decays to b anti-b g
Abstract
Angular asymmetries have been measured in polarized
Z0 decays to b anti-bg collected by the SLD
experiment at the SLC. A high purity b anti-bg event sample is
selected utilizing lifetime information given by the SLD CCD pixel
vertex detector and the stable micron-size SLC beams, and the
b- and anti-b-jets are identified using lifetime information
and momentum-weighted track charge. Parity violating asymmetries in
the b-quark polar and azimuthal angles are measured to test the
Standard Model. Two angular correlations between the three-jet plane
and the Z0 polarization are used to perform symmetry
tests. The CP-even and T-odd, and the CP-odd and T-odd, angular
asymmetries are sensitive to physics beyond the Standard Model. We
measure the expectation values of these quantities to be consistent
with zero and set limits on the correlations at the 5% level.
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