OUR FIT is obtained using the fit procedure and correlations as determined by the LEP Electroweak Working Group (see the note “The ${{\mathit Z}}$ boson” and ref. LEP-SLC 2006). For the ${{\mathit Z}}$ peak, we report the pole asymmetry defined by (3/4)$\mathit A_{{{\mathit e}}}\mathit A_{{{\mathit \tau}}}$ as determined by the nine-parameter fit to cross-section and lepton forward-backward asymmetry data.

ASYMMETRY ${\mathrm {(\%)}}$ STD. MODEL $\sqrt {\mathit s }$ ${\mathrm {(GeV)}}$ DOCUMENT ID TECN $\bf{ 1.88 \pm0.17}$ OUR FIT $ 1.45 \pm0.30 $ $1.57$ $91.2$ 1 ABBIENDI 2001 A OPAL $ 2.41 \pm0.37 $ $1.57$ $91.2$ ABREU 2000 F DLPH $ 2.60 \pm0.47 $ $1.57$ $91.2$ ACCIARRI 2000 C L3 $ 1.70 \pm0.28 $ $1.57$ $91.2$ 2 BARATE 2000 C ALEP • • We do not use the following data for averages, fits, limits, etc. • • $ -32.8 {}^{+6.4}_{-6.2} \pm1.5 $ $-32.1$ $56.9$ 3 ABE 1990 I VNS $ -8.1 \pm2.0 \pm0.6 $ $-9.2$ $35$ HEGNER 1990 JADE $ -18.4 \pm19.2 $ $-24.9$ $52.0$ 4 BACALA 1989 AMY $ -17.7 \pm26.1 $ $-29.4$ $55.0$ 4 BACALA 1989 AMY $ -45.9 \pm16.6 $ $-31.2$ $56.0$ 4 BACALA 1989 AMY $ -49.5 \pm18.0 $ $-33.0$ $57.0$ 4 BACALA 1989 AMY $ -20 \pm14 $ $-25.9$ $53.3$ ADACHI 1988 C TOPZ $ -10.6 \pm3.1 \pm1.5 $ $-8.5$ $34.7$ ADEVA 1988 MRKJ $ -8.5 \pm6.6 \pm1.5 $ $-15.4$ $43.8$ ADEVA 1988 MRKJ $ -6.0 \pm2.5 \pm1.0 $ $8.8$ $34.6$ BARTEL 1985 F JADE $ -11.8 \pm4.6 \pm1.0 $ $14.8$ $43.0$ BARTEL 1985 F JADE $ -5.5 \pm1.2 \pm0.5 $ $-0.063$ $29.0$ FERNANDEZ 1985 A MAC $ -4.2 \pm2.0 $ $0.057$ $29$ LEVI 1983 MRK2 $ -10.3 \pm5.2 $ $-9.2$ $34.2$ BEHREND 1982 CELL $ -0.4 \pm6.6 $ $-9.1$ $34.2$ BRANDELIK 1982 C TASS 1  ABBIENDI 2001A error includes approximately 0.26 due to statistics and 0.14 due to event selection systematics. 2  BARATE 2000C error includes approximately $0.26$ due to statistics and $0.11$ due to experimental systematics. 3  ABE 1990I measurements in the range 50 ${}\leq{}$ $\sqrt {\mathit s }{}\leq{}$ $60.8$ GeV. 4  BACALA 1989 systematic error is about 5$\%$.

References