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arXiv · 0904.4442

Deep exclusive electroproduction of $π^+$ at HERMES

Murat M. Kaskulov·Ulrich Mosel
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Abstract

Deeply virtual electroproduction of pion in exclusive reaction $p(e,e'π^+)n$ is studied using a two-component model which includes soft hadronic and hard partonic reaction mechanisms. The results are compared with the experimental data measured at HERMES in the deep inelastic region for values of $Q^2>1$ GeV$^2$ and $W^2 > 10$ GeV$^2$. At forward angles the $π^+$ cross section is longitudinal and is dominated by exchange of Regge poles, with $π$ the dominant trajectory. The off-forward region with $-t>1$ GeV$^2$ is transverse and shows the dominance of partonic subprocesses. An implication of present results for the future JLAB facilities are briefly discussed.

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Murat M. Kaskulov, Ulrich Mosel. 2009-04-28. Deep exclusive electroproduction of $π^+$ at HERMES. https://doi.org/10.1103/physrevc.80.028202

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