a0(980)-->γγ and f0(980)-->γγ: a consistent description
Abstract
We work out the Linear Sigma Model (LSM) predictions for the 2γ decay rates of the a0(980), f0(980) mesons under the assumption that they are respectively the I=1 and I=0 members of the q¯q scalar nonet. Agreement with experimental data is achieved provided we include the contribution of a κ meson with mass ~900 MeV, and a scalar mixing angle (σ-f0 mixing in the {NS>,S>} basis) ϕs~-14 deg, as predicted by the model.
- Publication:
-
Physics Letters B
- Pub Date:
- May 1999
- DOI:
- 10.1016/S0370-2693(99)00400-1
- arXiv:
- arXiv:hep-ph/9903234
- Bibcode:
- 1999PhLB..454..365L
- Keywords:
-
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 1 figure