arXiv:nucl-th/0402100·v2·Nuclear Theory
Neutron beta decay in effective field theory
S. Ando (1 and 3)🇨🇦 · H. W. Fearing (1)🇨🇦 · V. Gudkov (3)🇺🇸 · K. Kubodera (3)🇺🇸 · F. Myhrer (3)🇺🇸 · S. Nakamura (2 and 3)🇯🇵 · T. Sato (2 and 3) ((1) TRIUMF, (2) Osaka University, (3) University of South Carolina)🇯🇵
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 well-defined low-energy constants. The effective field theory allows a systematic evaluation of higher order corrections to our results to the extent that the relevant low-energy constants are known.
Comments: 13 pages, 1 figure; two references added, minor correction