Flux tube zero-point motion, hadronic charge radii, and hybrid meson production cross sections - art. no. 114016

Flux tube zero-point motion produces quark displacements transverse to the flux tube which make significant Contributions to hadronic charge radii. In heavy quark systems, these contributions can be related by Bjorken's sum r ule to the rates for semileptonic decay to hybrid mesons. This connection c an be generalized to other leptoproduction processes, where transverse cont ributions to elastic form factor slopes are related to the cross sections f or the production of the associated hybrid starts. I identify the flux tube overlap integral responsible for these effects as the strong QCD analogue of the Sudakov form factor of perturbative QCD. [S0556-2821(99)05121-8].