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arXiv · hep-ph/9505204

A STRANGE MESONIC TRANSITION FORM FACTOR

J. L. Goity·M. J. Musolf
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Abstract

The strange-quark vector current $ρ$-to-$π$ meson transition form factor is computed at one-loop order using strange meson intermediate states. A comparison is made with a $ϕ$-meson dominance model estimate. We find that one-loop contributions are comparable in magnitude to those predicted by $ϕ$-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-$|Q^2|$ parity-violating electron-nucleus scattering measurements aimed at probing the strange-quark content of the nucleon.

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J. L. Goity, M. J. Musolf. 1995-05-01. A STRANGE MESONIC TRANSITION FORM FACTOR. https://doi.org/10.1103/physrevc.53.399

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