Extracting B({omega}{r_arrow}{pi}{sup +}{pi}{sup {minus}}) from the timelike pion form factor
- Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506-0055 (United States)
We extract the {ital G}-parity-violating branching ratio B({omega}{r_arrow}{pi}{sup +}{pi}{sup {minus}}) from the effective {rho}{sup 0}-{omega} mixing matrix element {tilde {Pi}}{sub {rho}{omega}}(s), determined from e{sup +}e{sup {minus}}{r_arrow}{pi}{sup +}{pi}{sup {minus}} data. The {omega}{r_arrow}{pi}{sup +}{pi}{sup {minus}} partial width can be determined either from the timelike pion form factor or through the constraint that the mixed physical propagator D{sub {rho}{omega}}{sup {mu}{nu}}(s) possesses no poles. The two procedures are inequivalent in practice, and we show why the first is preferred, to find finally B({omega}{r_arrow}{pi}{sup +}{pi}{sup {minus}})=1.9{plus_minus}0.3{percent}. {copyright} {ital 1999} {ital The American Physical Society}
- OSTI ID:
- 322041
- Journal Information:
- Physical Review, D, Vol. 59, Issue 7; Other Information: PBD: Apr 1999
- Country of Publication:
- United States
- Language:
- English
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