ar X iv : h ep - p h / 96 01 21 0 v 1 4 J an 1 99 6 LU TP 95 – 35 December 1995 Soft Photoproduction Physics ∗

X iv : h ep - p h / 96 01 25 5 v 3 9 J ul 1 99 6 Symmetry aspects of the pion leptoproduction and the upper limit of the Levelt - Mulders asymmetry ∗

X iv :h ep -p h/ 96 01 25 5v 3 9 J ul 1 99 6 Symmetry aspects of the pion leptoproduction and the upper limit of the Levelt-Mulders asymmetry∗ Wei Lu, Jian-Jun Yang 1 CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China and Institute of High Energy Physics, P.O. Box 918(4), Beijing 100039, P.R. China†, (e-mail: [email protected]) 2 Department of Physics, Nanjing Normal Univers...

ar X iv : h ep - p h / 95 09 21 5 v 1 4 S ep 1 99 5 PM / 95 - 31 June 1995 Residual New Physics Effects in e +

ar X iv : h ep - p h / 95 01 29 1 v 2 4 A pr 1 99 5 EFI - 95 - 02 January 1995 hep - ph / 9501291 CHARM AND BEAUTY IN PARTICLE PHYSICS

The spectra of states containing charmed and beauty quarks, and their regularities, are reviewed.

ar X iv : h ep - e x / 99 10 01 8 v 1 1 1 O ct 1 99 9 PHOTOPRODUCTION AT LOW Q

The past year has seen a number of important developments in hard photoproduc-tion physics at the HERA collider. These are surveyed.

ar X iv : h ep - p h / 95 06 25 0 v 1 6 J un 1 99 5 CERN - TH / 95 - 121 Jet Physics in Deeply Inelastic Scattering at HERA ∗

We give an overview of jet physics in deeply inelastic scattering at HERA. The problem of jet definitions, the scale dependence of jet cross sections and some applications are discussed.