Role of the a{sub 1}(1260) resonance in multipion decays of light vector mesons
Journal Article
·
· Physical Review. D, Particles Fields
- Laboratory of Theoretical Physics, S. L. Sobolev Institute for Mathematics, 630090, Novosibirsk (Russian Federation)
The contribution of the a{sub 1}(1260) meson to the amplitudes of the decays {rho}(770){yields}4{pi}, {omega}(782){yields}5{pi}, and {phi}(1020){yields}5{pi} is analyzed in the chiral model of pseudoscalar, vector, and axial vector mesons based on the generalized hidden local symmetry added with the anomalous terms. The analysis shows that inclusion of a{sub 1} meson in the intermediate states results in enhancement of the branching ratios of the above decays by the factor ranging from 1.3 to 1.9 depending on the mass of a{sub 1} meson ranging from 1.23 GeV to m{sub a{sub 1}}=m{sub {rho}}{radical}(2)=1.09 GeV, the greater factor standing in case of lower mass of the a{sub 1}.
- OSTI ID:
- 20705933
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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