Strange mesonic transition form factor
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. They 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 cut-off mass, a large uncertainty in the estimate of the loops is unavoidable. These results indicate that non-nucleonic strange quarks could contribute appreciably in moderate-{vert_bar}Q{sup 2}{vert_bar} parity-violating electron-nucleus scattering measurements aimed at probing the strange-quark content of the nucleon.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 756931
- Report Number(s):
- CEBAF-TH-94-27; DOE/ER/40150-1669; hep-ph/9505204
- Journal Information:
- Phys.Rev. C53 (1996) 399-409, Journal Name: Phys.Rev. C53 (1996) 399-409
- Country of Publication:
- United States
- Language:
- English
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