Precision extraction of a_nn from pi- d --> n n gamma using chiral perturbation theory

Preprint English OPEN
Gardestig, A.; Phillips, D. R.;
  • Subject: High Energy Physics - Phenomenology
    arxiv: Nuclear Theory | High Energy Physics::Phenomenology | Nuclear Experiment

The neutron-neutron scattering length a_nn provides a sensitive probe of charge-symmetry breaking in the strong interaction. Here we summarize our recent efforts to use chiral perturbation theory in order to systematically relate a_nn to the shape of the neutron spectru... View more
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