Hard Exclusive Electroproduction of Two Pions off Proton and Deuteron at HERMES

P. di Nezza; R. Fabbri

doi:10.1063/1.1607150

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arXiv · hep-ex/0211008

Hard Exclusive Electroproduction of Two Pions off Proton and Deuteron at HERMES

P. di Nezza·R. Fabbri

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Abstract

Exclusive electroproduction of $π^+π^-$ pairs off hydrogen and deuterium targets has been studied with the HERMES experiment. The angular distribution of the $π^+$ in the $π^+π^-$ rest system has been studied in the invariant mass range $0.3 < m_{ππ} <1.5$ GeV. Theoretical models derived in the framework of the Generalized Parton Distributions show that this angular distribution receives only contributions from the interference between the isoscalar channel I=0 and the isovector channel I=1.

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P. di Nezza, R. Fabbri. 2002-11-25. Hard Exclusive Electroproduction of Two Pions off Proton and Deuteron at HERMES. https://doi.org/10.1063/1.1607150

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