Importance of the eta-pion decay mode in the split a2 decay
19692 pages
Published in:
- Phys.Rev.Lett. 22 (1969) 212-213
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Abstract: (APS)
If SU(3) symmetry is assumed and singlet-octet mixing is neglected, (a) the ηπ decay mode is forbidden for all negative CP states, (b) ηπ cannot appear in decays where the KK¯ mode is absent, (c) the ηπKK¯ branching ratio is the same for all isovector octet bosons allowed to decay into ρπ. Violation of these predictions would suggest serious re-examination of other SU(3) decay predictions. Prediction (b) seems to be violated by preliminary data. If there are no violations, and ηπ and ρπ are both allowed, the only possible classification for either A2 peak with J<4 is 2++.- meson resonance: decay modes
- decay modes: meson resonance
- meson resonance: a2
- a2: meson resonance
- final states
- kaon: antikaon
- eta: pion
- final state
- meson resonance: eta
- eta: meson resonance
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