slides PDF - Theory Group
slides PDF - Theory Group
slides PDF - Theory Group
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Curves refer to the quenched data<br />
G πΝ =a(1-bQ 2 /m π 2 )<br />
G πΝΔ =1.6G πΝ<br />
GTR: G πΝ =G A m N /f π<br />
G πΝN and G πΝΔ<br />
C. Alexandrou, University of Cyprus PSI, December 18th 2007<br />
Q 2 -dependence for G πΝ (G πΝΔ )<br />
extracted from G A (C 5 A ) using the<br />
Goldberger-Treiman relation deviates at<br />
low Q 2<br />
Small deviations from linear Q 2 -<br />
dependence seen at very low Q 2 in the<br />
case of G πΝΔ<br />
G πΝΔ /G πΝ = 2C 5 A /GA as predicted by<br />
taking ratios of GTRs<br />
G πΝΔ /G πΝ =1.60(1)
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