A STRANGE MESONIC TRANSITION FORM FACTOR

Abstract

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 $\varphi$-meson dominance model estimate. We find that one-loop contributions are comparable in magnitude to those predicted by $\varphi$-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.

Revtex, six figures available as hard copy upon request.

References in corpus (7)

• Intermediate-Energy Semileptonic Probes of the Hadronic Neutral Current
• Stranger Still: Kaon Loops and Strange Quark Matrix Elements of the Nucleon
• Stranger in the Light: The Strange Vector Form Factors of the Nucleon
• Many-Body Currents and the Strange-Quark Content of 4he
• Meson-Exchange Currents and the Strangeness Radius of 4he
• Electromagnetic Gauge Invariance of Chiral Hybrid Quark Models
• Non-Standard Physics and Nucleon Strangeness in Low-Energy PV Electron Scattering

Cited by in corpus (7)

• Low Energy Precision Test of Supersymmetry
• K\bar{K}-Continuum and Isoscalar Nucleon Form Factors
• K^* Mesons and Nucleon Strangeness
• Meson-Baryon-Baryon Vertex Function and the Ward-Takahashi Identity
• K* nucleon hyperon form factors and nucleon strangeness
• Nucleon Vector Strangeness Form Factors: Multi-pion Continuum and the OZI Rule
• Strange Mesonic Transition Form Factor in the Chiral Constituent Quark Model