η' - π mass splitting in full QCD from negative flavour numbers
Abstract
η'-τ splitting in full QCD can be estimated extrapolating from negative to positive flavour numbers. Our results show a flavour dependence consistent with the Witten Veneziano formula based on the U(1) anomaly.
- Publication:
-
Nuclear Physics B Proceedings Supplements
- Pub Date:
- February 1997
- DOI:
- 10.1016/S0920-5632(96)00654-8
- Bibcode:
- 1997NuPhS..53..338M