Physics Commons^™

Radiative Neutron Β-Decay In Effective Field Theory, Susan Gardner, Véronique Bernard, Ulf-G. Meißner, Chi Zhang

Center for Plant Science Innovation: Faculty and Staff Publications

In summary, we have computed the photon energy spectrum and photon polarization in neutron radiative β-decay in an effective field theory approach, utilizing HBCHPT and the SSE, including all terms in O(1/M). The leading contribution to the photon energy spectrum has been calculated previously [4]; we agree with the expression in Ref. [4] for Σ_spins |M|², though we disagree with their numerical results for the photon energy spectrum. Moreover, we find that the O(1/M) terms are numerically quite small, generating contributions no larger than O(0.5 %), so that radiative neutron β-decay is quite insensitive to nucleon structure …