WHY IS THE δ(983)→2γ WIDTH SO SMALL?
- 30 August 1994
- journal article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters A
- Vol. 9 (26) , 2381-2388
- https://doi.org/10.1142/s0217732394002252
Abstract
The δ0(983)→2γ decay width is calculated in a linear σ-model framework, in which both quark and meson loops contribute to the decay amplitude, and compared to the experimental decay width. The result is seen to depend strongly on the magnitude of the light quark mass and is compatible with the present measured rate, up to experimental uncertainties, for quark masses of order 300 MeV.Keywords
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