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Neutral pion photoproduction off 3H and 3He in chiral perturbation theory

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arxiv 1103.3400 v2 pith:3EB7FD42 submitted 2011-03-17 nucl-th hep-ph

classification nucl-thhep-ph
keywords chiraltheoryamplitudeneutralnuclearorderperturbationpion
verification ladder T0 review T1 audit T2 compute T3 formal
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We calculate electromagnetic neutral pion production off three-nucleon bound states (3H, 3He) at threshold to leading one-loop order in the framework of chiral nuclear effective field theory. In addition, we analyze the dependence of the nuclear S-wave amplitude E_{0+} on the elementary neutron amplitude E_{0+}^{pi0 n} which in the case of 3He provides a stringent test of the prediction based on chiral perturbation theory. Uncertainties from higher order corrections are estimated.

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