ar X iv : h ep - t h / 02 09 23 9 v 1 2 7 Se p 20 02 Tubular D 3 - branes and their Dualities

ar X iv : h ep - t h / 02 09 19 2 v 1 2 3 Se p 20 02 QUANTUM MECHANICAL MIRROR SYMMETRY , D BRANES , AND B FIELDS

We construct quantum mechanical models which mimic many features of string theory. We use these models to gain improved descriptions of B fields and gerbes. We examine the analogs of T duality, D branes, and mirror symmetry in these models and derive quantum mechanical analogs of standard phenomena, such as the noncommutative geometry induced by a B field.

ar X iv : h ep - e x / 02 09 04 3 v 1 1 8 Se p 20 02 1 Elementary Hadronic Interactions at the CERN SPS

ar X iv : h ep - p h / 02 09 22 3 v 1 1 9 Se p 20 02 1 On the scalar nonet lowest in mass

The hypothesis that there exists a nonet of scalars mainly composed of a valence quark-antiquark pair and mixed according to near singlet-octet separation : f0(980) singlet, a (1430) f0(1500) octet, is put to further tests from the three body decays D ± , D

ar X iv : h ep - p h / 02 09 34 6 v 1 2 8 Se p 20 02 B → ργ Decay in the Large Energy Effective Theory

ar X iv : h ep - p h / 02 09 23 2 v 1 1 9 Se p 20 02 SEPARATION OF SOFT AND HARD PHYSICS IN DVCS

A model for deeply virtual Compton scattering, based on analytical light-cone hadron wave functions is presented and studied at energies currently accessible at Jefferson Laboratory and DESY. It is shown that poles and perpendicular vector components play an important role at Q 2 < 10 GeV 2. A Q 2 suppressed diagram has to be included at these low energies, but becomes negligible above 10 GeV 2...