ar X iv : h ep - p h / 94 08 34 7 v 1 2 2 A ug 1 99 4 INFNCA - TH - 94 - 17 August 1994 DIMENSIONAL REDUCTION FOR FERMIONS ∗ MARCELLO

ar X iv : h ep - t h / 94 08 04 1 v 1 7 A ug 1 99 4 June 1994 Current - like variables in massive and massless integrable models 1

ar X iv : h ep - p h / 94 08 22 7 v 1 3 A ug 1 99 4 A Proposed Test of Charge Symmetry in Σ Decay

The semi-leptonic decays of Σ ± offer a vehicle for observing charge symmetry-breaking. The effect is expected to be about 6%, enhanced due to the replacement of two u quarks by d quarks. We propose that present experimental data be improved to search for this effect.

ar X iv : h ep - p h / 94 05 28 5 v 1 1 3 M ay 1 99 4 TUTP – 94 - 10

We consider dyon configurations in the standard electroweak model. In the presence of a θ term and no fermions, the usual result q = (n+ θ/2π)e is obtained for the electric charge spectrum. The effect of including standard model fermions is discussed qualitatively.

ar X iv : h ep - p h / 94 11 23 2 v 1 7 N ov 1 99 4 CHIRAL PERTURBATION THEORY 1

ar X iv : h ep - p h / 94 07 39 7 v 1 2 9 Ju l 1 99 4 Analysis of the anomalous events e + e − → l + l −