Strong U{sub A}(1) breaking in radiative {eta} decays
Journal Article
·
· AIP Conference Proceedings
- Showa College of Pharmaceutical Sciences, Machida, Tokyo 194 (Japan)
- Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152 (Japan)
We study the {eta}{yields}{gamma}{gamma}, {eta}{yields}{gamma}{mu}{sup -}{mu}{sup +} and {eta}{yields}{pi}{sup 0}{gamma}{gamma} decays using an extended three-flavor Nambu-Jona-Lasinio model that includes the instanton induced U{sub A}(1) breaking interaction. We find that the {eta}-meson mass and {eta} decay widths are in good agreement with the experimental values when the U{sub A}(1) breaking is rather strong.
- OSTI ID:
- 21175468
- Journal Information:
- AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 412; ISSN APCPCS; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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