deletions | additions       diff --git a/Measurements at the Z pole.tex b/Measurements at the Z pole.tex  index eeb81d2..831bbdc 100644  --- a/Measurements at the Z pole.tex  +++ b/Measurements at the Z pole.tex 
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{\em We consider that 100 keV is a reasonable target goal for the Z mass precision at TLEP}.  The Z width was also determined from the line shape scan to be $2495.2 \pm 2.3$ MeV/$c^2$. The statistical error was 2 MeV and would be again less that 10 KeV at TLEP. The systematic uncertainty from the LEP energy calibration was 1.2 MeV, clearly dominated by the reproducibility issues. Again this should be reduced to below 100 keV at TLEP.   The theory systematics on $\Gamma_Z$ were estimated at the level of ( $\le 200 keV$) and should be revisited.. revisited. \\  {\em We consider that 100 keV is a reasonable target goal for the Z width precision at TLEP}.    Combining Determination of  the Z width with the partial widths requires  measurements of branching ratios at the Z peak, in particular  thepeak cross-section and  ratio of  branching fractions of the Z boson into lepton to hadrons one can determine and  the peak hadronic cross-section. The hadroni to  leptonic width of the Z. ratio was measured at LEP to be $R\ell = \frac{\Gamma_{had}}{\Gamma{\ell}}= 20.767\pm 0.025$   common: 0.007