Gokhale, M. ; Patil, S. ; Rindani, S. D. (1976) Asymmetry in e+e̅ →K++K- and η→π0+γ+γ Physical Review D - Particles, Fields, Gravitation and Cosmology, 14 (9). pp. 2250-2258. ISSN 1550-7998
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Official URL: http://prd.aps.org/abstract/PRD/v14/i9/p2250_1
Related URL: http://dx.doi.org/10.1103/PhysRevD.14.2250
Abstract
The final-state interaction for the off-shell-photon process γ+γ→K++K- is discussed in terms of an "intermediate representation" where one of the photons is on shell. This allows the evaluation of the absorptive part and the soft-photon contribution for e+e̅ →K++K- from the two-photon intermediate state. The asymmetry due to the interference between the one-photon and the two-photon amplitudes for this process, near the f′-resonance position, is found to be quite large, but goes through zero. Generalization of the analysis of the final-state interaction in the s-wave state to SU(3) allows us to predict a decay width Γ(η→π0+γ+γ)≈0.05 keV, which is in good agreement with the experimental number.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 94769 |
| Deposited On: | 18 Oct 2012 06:59 |
| Last Modified: | 18 Oct 2012 06:59 |
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