Isospin breaking in low-energy pion-nucleon scattering
Journal Article
·
· Physical Review Letters
- Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003 (United States)
- Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287 (United States)
We have analyzed low-energy pion-nucleon data for isospin invariance by comparing charge-exchange amplitudes derived from charge-exchange data with those predicted from recent {pi}{sup {plus_minus}}{ital p} elastic data through the application of isospin invariance. A discrepancy of the order of 7% is observed beyond the contributions of the {pi}{sup {plus_minus}}{ital p} Coulomb interaction and the hadronic mass differences.
- OSTI ID:
- 55263
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 19 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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