Near threshold neutral pion electroproduction on deuterium in chiral perturbation theory
H. Krebs, V. Bernard, Ulf-G. Meißner
Abstract
Near threshold neutral pion electroproduction on the deuteron is studied in the framework of baryon chiral perturbation theory at next-to-leading order in the chiral expansion. We develop the multipole decomposition for pion production off spin-1 particles appropriate for the threshold region. The existing data at photon virtuality k2 = -0.1 GeV2 can be described satisfactorily. Furthermore, the prediction for the S-wave multipole Ed at the photon point is in good agreement with the data.
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