Strange mesonic transition form factor
- Department of Physics, Hampton University, Hampton, Virginia 23668 (United States)
- Department of Physics, Old Dominion University, Norfolk, Virginia 23529 (United States)
The strange-quark vector current {rho}-to-{pi} meson transition form factor is computed at one-loop order using strange meson intermediate states. A comparison is made with a {phi}-meson dominance model estimate. We find that one-loop contributions are comparable in magnitude to those predicted by {phi}-meson dominance. It is possible that the one-loop contribution can make the matrix element as large as those of the electromagnetic current mediating vector meson radiative decays. However, due to the quadratic dependence of the one-loop results on the hadronic form factor cutoff mass, a large uncertainty in the estimate of the loops is unavoidable. These results indicate that non-nucleonic strange quarks could contribute appreciable in moderate-{parallel}{ital Q}{sup 2}{parallel} parity-violating electron-nucleus scattering measurements aimed at probing the strange-quark content of the nucleon. {copyright} {ital 1996 The American Physical Society.}
- Research Organization:
- Thomas Jefferson National Accelerator Facility
- DOE Contract Number:
- AC05-84ER40150; FG05-94ER40832
- OSTI ID:
- 283646
- Journal Information:
- Physical Review, C, Journal Name: Physical Review, C Journal Issue: 1 Vol. 53; ISSN PRVCAN; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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