s . at om - p h ] 1 4 A pr 1 99 7 Post - Collision Interaction with Wannier electrons

ar X iv : h ep - p h / 99 04 46 3 v 1 2 7 A pr 1 99 9 Electron capture on 8 B nuclei and Superkamiokande results

The energy spectrum of recoil electrons from solar neutrino scattering, as observed by Superkamiokande, is deformed with respect to that expected from SSM calculations. We considered ν − e scattering from neutrinos produced by the electron–capture on 8B nuclei, e +8 B →8 Be + νe, as a possible explanation of the spectral deformation. A flux ΦeB ≃ 10 4 cm−2 s−1 could account for Superkamiokande ...

ar X iv : h ep - p h / 97 04 41 7 v 1 2 8 A pr 1 99 7 Associated Production of Hγ or HZ pairs at μ + μ − Collisions

Threshold behavior of e-H ionizing collisions.

We present accurate ab initio numerical solutions of the full Schrödinger equation for the electron-impact ionization of hydrogen near threshold using the propagating exterior complex scaling method. They provide strong support for the Wannier threshold law [Phys. Rev. 90, 817 (1953)], giving sigma proportional to E(1.122+/-0.015), and also give the energy dependence of the electrons' angular d...

s . at om - p h ] 1 1 O ct 1 99 9 Low - energy three - body charge transfer reactions with Coulomb interaction in the final state ∗

Three-body charge transfer reactions with Coulomb interaction in the final state are considered in the framework of coordinate-space integro-differential Faddeev-Hahn-type equations within twoand six-state close coupling approximations. The method is employed to study direct muon transfer in low-energy collisions of the muonic hydrogen Hμ by helium (He ++) and lithium (Li+++) nuclei. The experi...

ar X iv : c on d - m at / 9 40 90 38 v 1 9 S ep 1 99 4 Enhancement of Persistent Currents by the Coulomb Interaction

The persistent current in three-dimensional mesoscopic rings is investigated numerically. The model is tight-binding one with random site-energies and interaction between electrons. The Hartree-Fock approximation is adopted for the interaction between electrons, and models with up to 3 × 4 × 40 sites are investigated. It is shown that the long-range Coulomb interaction enhances the persistent c...