Radiative neutron beta-decay in effective field theory

Journal Article · 01 July 2005 · Journal of Research of the National Institute of Standards and Technology

DOI: https://doi.org/10.6028/jres.110.062 · OSTI ID:1628765

Gardner, S. ^[1]; Bernard, V. ^[2]; Meissner, U. G. ^[3]; Zhang, C. ^[1]

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1. Univ. of Kentucky, Lexington, KY (United States). Dept. of Physics and Astronomy
2. Université Louis Pasteur, Strasbourg (France). Laboratoire de Physique Théorique
3. Univ. of Bonn (Germany). Helmholtz-Institut für Strahlen-und Kernphysik (Theorie); Forschungszentrum Jülich (Germany). Institut für Kernphysik (Theorie)

We consider radiative β-decay of the neutron in heavy baryon chiral perturbation theory. Nucleon-structure effects not encoded in the weak coupling constants g_A and g_V are determined at next-to-leading order in the chiral expansion, and enter at the O(0.5 %)-level, making a sensitive test of the Dirac structure of the weak currents possible.

• Research Organization: Univ. of Kentucky, Lexington, KY (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• Grant/Contract Number: FG02-96ER40989
• OSTI ID: 1628765
• Journal Information: Journal of Research of the National Institute of Standards and Technology, Vol. 110, Issue 4; ISSN 1044-677X
• Publisher: National Institute of Standards (NIST)Copyright Statement
• Country of Publication: United States
• Language: English