ar X iv : h ep - p h / 98 04 23 4 v 1 6 A pr 1 99 8 CU - TP - 885 Jet broadening in deeply inelastic scattering ∗

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.

ar X iv : h ep - p h / 98 04 40 7 v 1 2 6 A pr 1 99 8 B c → l ν̄γ DECAY IN LIGHT CONE QCD

ar X iv : h ep - p h / 99 04 36 2 v 1 1 6 A pr 1 99 9 Preprint SSU - HEP - 99 / 04

The proton structure and proton polarizability corrections to the Lamb shift of electronic hydrogen and muonic hydrogen were evaluated on the basis of modern experimental data on deep inelastic structure functions. Numerical value of proton polarizability contribution to (2P-2S) Lamb shift is equal to 4.4 GHz.

ar X iv : h ep - p h / 98 10 45 0 v 1 2 2 O ct 1 99 8 Virtual Photon Structure from Low Q 2 Jet Production

We review next-to-leading order calculations of oneand two-jet production in ep collisions at HERA for photon virtualities in the range 1 < Q < 100 GeV. Soft and collinear singularities are extracted using the phase space slicing method. Numerical results are presented for HERA conditions with the Snowmass jet definition. The transition between photoproduction and deep-inelastic scattering is s...

ar X iv : h ep - p h / 98 05 31 5 v 1 1 3 M ay 1 99 8 hep - ph / 9805315 Edinburgh 98 / 6 DFTT 22 / 98 CORRECTIONS AT SMALL X

We show that the all order summation of small x logarithms cannot be included in the Q evolution of structure functions because the NLLx corrections overwhelm the LLx contribution. Talk at the ‘6th International Workshop on Deep Inelastic Scattering and QCD’ (DIS98), Brussels, April 1998 to be published in the proceedings