Spin Analysis of the Process e+e- --> tau+tau- at LEP

Details Spin Analysis of the Process e+e- --> tau+tau- at LEP Spin Analysis of the Process e+e- --> tau+tau- at LEP

1997-09-03

arxiv.org/abs/hep-ex/9709001v1

Nucl.Phys.Proc.Suppl. 65 (1998) 131-135

Physics

High Energy Physics

High Energy Physics - Experiment

Invited talk to San Miniato 1997, 6 pages, 10 figures, Latex, macro espcrc2.sty included

Scientific paper

10.1016/S0920-5632(97)00989-4

Using the data collected by the four experiments at LEP during 1990-1994, a precise measurement of the tau longitudinal polarisation (P_tau) has been performed, as well as the measurement of the transverse-transverse and transverse-normal tau spin correlations. From the P_tau measurement, assuming lepton universality of the neutral currents, the effective weak mixing angle has been determined to be sin(theta_W) = 0.2325 +- 0.0006. The Standard Model predictions are consistent with the measured results.

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