ar X iv : h ep - e x / 01 09 01 0 v 1 1 0 Se p 20 01 1 Color Transparency via Coherent Exclusive ρ 0 Production

ar X iv : h ep - e x / 01 09 01 0 v 2 2 6 Se p 20 01 1 Color Transparency via Coherent Exclusive ρ 0 Production

We examine the potential of the COMPASS experiment at CERN to study color transparency via exclusive coherent vector meson production in hard muon-nucleus scattering. It is demonstrated that COMPASS has high sensitivity to test this important prediction of perturbative QCD.

ar X iv : h ep - p h / 99 01 21 1 v 1 4 J an 1 99 9 THE ρ ± − ρ 0 MASS SPLITTING PROBLEM

It is discussed the problem of the ρ ± − ρ 0 mass splitting. It is suggested to use the φ → ρπ → 3π decay to measure the ρ ± − ρ 0 mass splitting.

ar X iv : h ep - e x / 97 11 01 6 v 1 2 1 N ov 1 99 7 Results on Λ 0 Production at HERMES

The production of Λ 0 's at the HERMES experiment is presented. Prospects for the future of Λ measurements at HERMES are discussed.

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 - l at / 0 01 20 10 v 1 7 D ec 2 00 0 1 The Vacuum Polarization : Power Corrections beyond OPE ? ∗

X iv :h ep -l at /0 01 20 10 v1 7 D ec 2 00 0 1 The Vacuum Polarization: Power Corrections beyond OPE ? ∗ M. Göckeler, R. Horsley, W. Kürzinger, V. Linke, D. Pleiter, P. E. L. Rakow and G. Schierholz Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany Deutsches Elektronen-Synchrotron DESY & NIC, D-15735 Zeuthen, Germany Institut für Physik, Humboldt-Universität...