Charge Symmetry Violation in $pn\to d \pi^0$ as a Test of Chiral Effective Field Theory

G.A. Miller; J.A. Niskanen; U. van Kolck

Charge Symmetry Violation in $pn\to d \pi^0$ as a Test of Chiral Effective Field Theory

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arxiv nucl-th/0006042 v1 pith:3BGJZMRW submitted 2000-06-20 nucl-th

U. van Kolck , J.A. Niskanen , G.A. Miller This is my paper · ORCID

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keywords chargechiraldeltaeffectivefieldsymmetrytheoryamplitude

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abstract

Chiral effective field theory predicts a specific charge symmetry violating amplitude for pion production. This term is shown to provide the dominant contribution to the forward-backward asymmetry in the angular distribution for the reaction $pn\to d\pi^0$, for reasonable values of the mass difference between down and up quarks, $\delta m_N$. Using a value $\delta m_N\approx$ 3 MeV leads to a prediction of a 10 standard deviation effect for a TRIUMF experiment.

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