Threshold neutral pion photoproduction off the tri-nucleon to O(q^4)

Abstract

We calculate electromagnetic neutral pion production off tri-nucleon bound states (3H, 3He) at threshold in chiral nuclear effective field theory to fourth order in the standard heavy baryon counting. We show that the fourth order two-nucleon corrections to the S-wave multipoles at threshold are very small. This implies that a precise measurement of the S-wave cross section for neutral pion production off 3He allows for a stringent test of the chiral perturbation theory prediction for the S-wave electric multipole E_{0+}^{pi0 n}.

arXiv comment17 pages, 5 figures, title changed, final version to appear in EPJA. arXiv admin note: substantial text overlap with arXiv:1103.3400

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Cited by in corpus (3)

• Nuclear effective field theory: status and perspectives
• Photocouplings at the Pole from Pion Photoproduction
• Chiral perturbation theory