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

P. Garcia-Abia
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Abstract

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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P. Garcia-Abia. 1997-09-03. Spin Analysis of the Process e+e- --> tau+tau- at LEP. https://doi.org/10.1016/s0920-5632(97)00989-4

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