Radiative neutron β-decay in effective field theory

Susan Gardner, Véronique Bernard, Ulf G. Meißner, Chi Zhang

Research output: Contribution to journalArticlepeer-review


We consider radiative β-decay of the neutron in heavy baryon chiral perturbation theory. Nucleon-structure effects not encoded in the weak coupling constants gA and gV are determined at next-to-leading order in the chiral expansion, and enter at the 0(0.5 %)-level, making a sensitive test of the Dirac structure of the weak currents possible.

Original languageEnglish
Pages (from-to)411-414
Number of pages4
JournalJournal of Research of the National Institute of Standards and Technology
Issue number4
StatePublished - 2005

Bibliographical note

Funding Information:
The work of S.G. is supported in part by the US Department of Energy under contract number DE-FG02-96ER40989. We are grateful to Fred Myhrer for providing us with a draft of Ref. [24] prior to publication and thank Gudrun Hiller for a discussion of the work in Ref. [28] . We also thank the members of the Fundamental Neutron Physics Program in the Ionizing Radiation Division of the National Institute of Science and Technology for a discussion of the experimental possibilities.


  • Neutron β-decay
  • Radiative corrections

ASJC Scopus subject areas

  • General Engineering


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