chiral dynamics in the γ→p→pπ0 reaction

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ID: 217324
2015
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Abstract
We investigate the neutral pion photoproduction on the proton near threshold in covariant chiral perturbation theory with the explicit inclusion of Δ degrees of freedom. This channel is specially sensitive to chiral dynamics and the advent of very precise data from the Mainz microtron has shown the limits of the convergence of the chiral series for both the heavy baryon and the covariant approaches. We show that the inclusion of the Δ resonance substantially improves the convergence leading to a good agreement with data for a wider range of energies.
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blin2015physicschiral Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;A.N. Hiller Blin;T. Ledwig;M.J. Vicente Vacas
Journal ACS chemical biology
Year 2015
DOI
10.1016/j.physletb.2015.05.067
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