{eta}{sup {prime}}{r_arrow}{eta}{pi}{pi} decay as a probe of a possible lowest-lying scalar nonet
Journal Article
·
· Physical Review, D
- Department of Physics, Syracuse University, Syracuse, New York 13244-1130 (United States)
We study the {eta}{sup {prime}}{r_arrow}{eta}{pi}{pi} decay within an effective chiral Lagrangian approach in which the lowest lying scalar meson candidates {sigma}(560) and {kappa}(900) together with the f{sub 0}(980) and a{sub 0}(980) are combined into a possible nonet. We show that there exists a unique choice of the free parameters of this model which, in addition to fitting the {pi}{pi} and {pi}K scattering amplitudes, well describes the experimental measurements for the partial decay width of {eta}{sup {prime}}{r_arrow}{eta}{pi}{pi} and the energy dependence of this decay. As a by-product, we estimate the a{sub 0}(980) width to be 70 MeV, in agreement with a new experimental analysis. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 355476
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 3 Vol. 60; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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