ar X iv : h ep - p h / 01 06 19 6 v 1 1 8 Ju n 20 01 NEUTRINO SCATTERING IN A MAGNETIC FIELD

ar X iv : h ep - p h / 01 06 19 6 v 2 5 J ul 2 00 1 NEUTRINO SCATTERING IN A MAGNETIC FIELD

Motivated by the evidence for a finite neutrino mass we examine anew the interaction of neutrinos in a magnetic field. We present the rate for radiative scattering for both massless and massive neutrinos in the standard model and give the corresponding numerical estimates. We also consider the effects arising from a possible neutrino magnetic moment.

ar X iv : h ep - p h / 01 06 15 6 v 1 1 4 Ju n 20 01 On the d / u Asymmetry and Parton Distributions

We discuss the impact of different measurements of the d/u asymmetry in the extraction of parameterizations of parton distribution functions.

ar X iv : h ep - p h / 01 06 21 1 v 1 1 9 Ju n 20 01 Interference effects in the decay φ → π 0 π 0 γ and the coupling constant g

ar X iv : h ep - p h / 01 06 17 2 v 1 1 5 Ju n 20 01 Unified approach to hard diffraction

Using a combination of S-Matrix and perturbative QCD properties in the small x Bj regime, we propose a formulation of hard diffraction unifying the partonic (Ingelman-Schlein) Pomeron, Soft Colour Interaction and QCD dipole descriptions.

ar X iv : h ep - p h / 01 06 06 4 v 2 1 3 Ju n 20 01 Implications of the Measurements of U e 3 to Theory ⋆

The predictions of Ue3 are discussed. Typical models which lead to the large, the seizable and the tiny Ue3 are also studied.