Deep exclusive electroproduction of ${\pi }^{+}$ at HERMES

Abstract

Deeply virtual electroproduction of pion in exclusive reaction $p(e,e^{\prime }{\pi }^{+})n$ 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 ${\pi }^{+}$ cross section is longitudinal and is dominated by exchange of Regge poles, with $\pi$ 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.

10 pages, 4 figures

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Cited by in corpus (10)

• Transport-theoretical Description of Nuclear Reactions
• An attempt to understand exclusive pi+ electroproduction
• Deep exclusive charged $\pi$ electroproduction above the resonance region
• Deep exclusive ${\pi }^{+}$ electroproduction off the proton at CLAS
• Primakoff production of ${\pi }^0$, $\eta$ and ${\eta }^{\prime }$ in the Coulomb field of a nucleus
• Color transparency in hadronic attenuation of rho0 mesons
• Charged pion electroproduction above the resonance region
• Quasielastic rho0 electroproduction on the proton at intermediate energy: Role of scalar and pseudoscalar meson exchange
• Resonance-Parton Duality in $(e,e^{\prime }\pi )$ off Nucleons
• Beam spin asymmetry in deeply virtual $\pi$ production