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arXiv · 0710.3265

Threshold Pion Electroproduction at Large Momentum Transfers

V. M. Braun·D. Yu. Ivanov·A. Peters
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Abstract

We consider pion electroproduction close to threshold for $Q^2$ in the region 1-10 GeV$^2$ on a nucleon target. The momentum transfer dependence of the S-wave multipoles at threshold, $E_{0+}$ and $L_{0+}$, is calculated in the chiral limit using light-cone sum rules. Predictions for the cross sections in the threshold region are given taking into account P-wave contributions that, as we argue, are model independent to a large extent. The results are compared with the SLAC E136 data on the structure function $F_2(W,Q^2)$ in the threshold region.

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V. M. Braun, D. Yu. Ivanov, A. Peters. 2007-10-17. Threshold Pion Electroproduction at Large Momentum Transfers. https://doi.org/10.1103/physrevd.77.034016

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