# CHARGE ASYMMETRY IN ${{\boldsymbol e}^{+}}$ ${{\boldsymbol e}^{-}}$ $\rightarrow$ ${{\boldsymbol q}}{{\overline{\boldsymbol q}}}$ INSPIRE search

Summed over five lighter flavors.

Experimental and Standard Model values are somewhat event-selection dependent. Standard Model expectations contain some assumptions on ${{\mathit B}^{0}}-{{\overline{\mathit B}}^{0}}$ mixing and on other electroweak parameters.
ASYMMETRY ${\mathrm {(\%)}}$ STD. MODEL $\sqrt {\mathit s }$ ${\mathrm {(GeV)}}$ DOCUMENT ID TECN
• • • We do not use the following data for averages, fits, limits, etc. • • •
$-0.76 \pm0.12 \pm0.15$ 91.2 1
 1992 I
DLPH
$4.0 \pm0.4 \pm0.63$ $4.0$ 91.3 2
 1992 L
OPAL
$9.1 \pm1.4 \pm1.6$ $9.0$ 57.9
 1991
TOPZ
$-0.84 \pm0.15 \pm0.04$ 91
 1991 B
ALEP
$8.3 \pm2.9 \pm1.9$ $8.7$ 56.6
 1990
AMY
$11.4 \pm2.2 \pm2.1$ $8.7$ 57.6
 1989 L
VNS
$6.0 \pm1.3$ $5.0$ 34.8
 1989
$8.2 \pm2.9$ $8.5$ 43.6
 1989
1  ABREU 1992I has $0.14$ systematic error due to uncertainty of quark fragmentation.
2  ACTON 1992L use the weight function method on 259k selected ${{\mathit Z}}$ $\rightarrow$ hadrons events. The systematic error includes a contribution of $0.2$ due to ${{\mathit B}^{0}}-{{\overline{\mathit B}}^{0}}$ mixing effect, $0.4$ due to Monte Carlo (MC) fragmentation uncertainties and $0.3$ due to MC statistics. ACTON 1992L derive a value of sin$^2\theta {}^{{\mathrm {eff}}}_{{{\mathit W}}}$ to be $0.2321$ $\pm0.0017$ $\pm0.0028$.
References:
 ABREU 1992I
PL B277 371 A Measurement of sin$^2\theta _{W}$ from the Charge Asymmetry of Hadronic Events at the ${{\mathit Z}^{0}}$ Peak
 ACTON 1992L
PL B294 436 A Measurement of the Forward-Backward Charge Asymmetry in Hadronic Decays of the${{\mathit Z}^{0}}$
PL B255 613 Charge Asymmetry of Hadronic Events in ${{\mathit e}^{+}}{{\mathit e}^{-}}$ Annihilation at $\sqrt {s }$ = 57.9 GeV
PL B259 377 Measurement of Charge Asymmetry in Hadronic ${{\mathit Z}^{0}}$ Decays
PRL 64 983 Forward Backward Charge Asymmetry in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ jets
PL B232 425 Charge Asymmetry of Hadron Jets and Limits on the Compositeness Scales in ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${\mathit {\mathit q}}$ ${\mathit {\overline{\mathit q}}}$ Reaction at $\sqrt {s }$ = 57.6 GeV