Strange mesonic transition form factor in the chiral constituent quark model
- Department of Physics, The George Washington University, Washington, D.C. 20052 (United States)
- Institute for Nuclear Theory, University of Washington, Seattle, Washington 98195 (United States)
The form factor g{sub {rho}{pi}}{sup (S)}(Q{sup 2}) of the strange vector current transition matrix element {l_angle}{rho}{vert_bar}{bar s}{gamma}{sub {mu}}s{vert_bar}{pi}{r_angle} is calculated within the chiral quark model. A strange vector current of the constituent {ital U} and {ital D} quarks is induced by kaon radiative corrections and this mechanism yields the nonvanishing values of g{sub {rho}{pi}}{sup (S)}(0). The numerical result at the photon point is consistent with the one given by the {phi}-meson dominance model, but the falloff in the Q{sup 2} dependence is faster than the monopole form factor. Mesonic radiative corrections are also examined for the electromagnetic {rho}-to-{pi} and K{sup {asterisk}}-to-K transition amplitudes. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 659350
- Journal Information:
- Physical Review, C, Vol. 58, Issue 4; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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