Wigner symmetry in the limit of large scattering lengths

Journal Article (Journal Article)

We note that, in the limit where the NN 1S0 and 3S1 scattering lengths, a(1S0) and a(3S1), go to infinity, the leading terms in the effective field theory for strong NN interactions are invariant under Wigner’s SU(4) spin-isospin symmetry. This explains why the leading effects of radiation pions on the S-wave NN scattering amplitudes vanish as a(1S0) and a(3S1) go to infinity. The implications of Wigner symmetry for NN → NN axion and γd → np are also considered. © 1999 The American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Mehen, T; Stewart, IW; Wise, MB

Published Date

  • January 1, 1999

Published In

Volume / Issue

  • 83 / 5

Start / End Page

  • 931 - 934

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/PhysRevLett.83.931

Citation Source

  • Scopus