Mitra, A. N. ; Pagnamenta, A. ; Singh, N. N. (1987) Understanding electroweak couplings of the pion as a qq̅ composite Physical Review Letters, 59 (21). pp. 2408-2411. ISSN 0031-9007
Full text not available from this repository.
Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.59.240...
Related URL: http://dx.doi.org/10.1103/PhysRevLett.59.2408
Abstract
Three basic pionic amplitudes fπ+, Fπ (for π0→γγ), and F3π (for πγ→γγ) are calculated in a QCD-oriented Bethe-Salpeter model of qq̅ hadrons which fits the spectra of all quarkonia. The results, fπ+=157 MeV (experiment, 135), Γ(π0→γγ)=8.03 eV (7.9), and F3π=12.7 GeV-3 (13±2), obtained with no free parameters, agree with the data and with the Wess-Zumino-Witten theory.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to The American Physical Society. |
| ID Code: | 35101 |
| Deposited On: | 09 Apr 2011 07:58 |
| Last Modified: | 09 Apr 2011 07:58 |
Repository Staff Only: item control page
