0 v 1 2 M ar 1 99 5 Existence Theorems for π n Vortex Scattering

ar X iv : h ep - p h / 99 01 28 3 v 1 1 2 Ja n 19 99 TPR - 99 - 02 Diffractive charged meson pair production

We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced π+π− and K+K− pairs in polarized lepton nucleon scattering. The resulting cross sections are sizable and are dominated by the gluonic contribution. We find large spin asymmetries, both for π+π− and for K+K− pairs. PACS. 12.38.-t, 13.60.-r, 13.60.Le

ar X iv : h ep - t h / 96 03 15 5 v 1 2 2 M ar 1 99 6 Long Range Intervortex Forces

A point particle approximation to the classical dynamics of well separated vortices of the abelian Higgs model is developed. The asymptotic static intervortex potential is calculated and used to model type II vortex scattering. A velocity dependent interaction Lagrangian for critically coupled vortices is derived, and reinterpreted geometrically to obtain a conjecture for the asymptotic form of...

ar X iv : h ep - p h / 98 10 52 7 v 1 2 9 O ct 1 99 8 HIGHER - TWIST CONTRIBUTIONS IN EXCLUSIVE PROCESSES

Using the renormalon technique, we estimate higher-twist contributions in deeply virtual Compton scattering and in hard exclusive π 0 leptoproduction.

0 v 3 2 5 M ar 1 99 8 Limits on ν μ ( ν e ) → ν τ oscillations and tau neutrino magnetic moment from neutrino - electron scattering

ar X iv : h ep - t h / 96 03 15 5 v 2 2 5 N ov 1 99 9 Static Intervortex Forces

A point particle approximation to the classical dynamics of well separated vortices of the abelian Higgs model is developed. A static vortex is asymptotically identical to a solution of the linearized field theory (a Klein-Gordon/Proca theory) in the presence of a singular point source at the vortex centre. It is shown that this source is a composite scalar monopole and magnetic dipole, and the...