Neutron beta decay in effective field theory
Abstract
Radiative corrections to the lifetime and angular correlation coefficients of neutron beta-decay are evaluated in effecitive field theory. We also evaluate the lowest order nucleon recoil corrections, including weak-magnetism. Our results agree with those of the long-range and model-independent part of previous calculations. In an effective theory the model-dependent radiative corrections are replaced by a well-defined low-energy constant. The effective field thoery allows a systematic evaluation of higher order corrections to our results to the extent that the relevant low-energy constants are known.Keywords
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