Remarks and Rigorous Bounds Relating to the Decay and Its Relationship to the Anomaly
Jun 5, 199010 pages
Published in:
- Mod.Phys.Lett.A 5 (1990) 2281-2288
Report number:
- LA-UR-90-1810
Citations per year
Abstract: (WSP)
It is rigorously shown that the amplitude for the decay Z → πγ must fall at least as fast as . Consequently its branching ratio must be smaller than 10−4; with slightly less conservative assumptions, this limit reduces to 5 × 10−6. The anomaly, the triangle graph and the Ward identities are shown to be consistent with both these bounds and the rate for π0 → 2γ.- Z0: radiative decay
- radiative decay: Z0
- Z0: branching ratio
- anomaly
- PCAC model
- Ward identity
- numerical calculations
- Z0 --> pi0 photon
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