Abstract

Final results of ALR and Alepton measurement at SLD

by Toshinori ABE

I present measurements of the left-right cross-section asymmetry for

Z boson production by e+e- collisions (ALR) and Zboson/lepton coupling

asymmetry parameters (Ae, Amu and Atau).  A hadronic final state sample

is used for ALR, while leptonic final state is used for Alepton.

The measurement includes the complete sample of polarized Z's collected by

the SLD detector at the SLAC Linear Collider (SLC).

These measurements are very sensitive to the effective weak mixing angle.

Assuming lepton universarity, the effective weak mixing angle is obtained with

precision of +-0.00026.




e-mail contact: hisho@icepp.s.u-tokyo.ac.jp,