ar X iv : h ep - p h / 04 06 07 1 v 1 7 Ju n 20 04 1 Mass effects in the polarized virtual photon structure ∗

ar X iv : a st ro - p h / 04 06 56 7 v 1 2 4 Ju n 20 04 1

ar X iv : h ep - p h / 04 06 17 6 v 2 2 3 Ju n 20 04 Spin Effects in the Electron Structure Functions

The electron structure functions are studied in polarized ee scattering. The formulae for longitudinally and transversely polarized electrons are presented. The smallnes of the electron mass leads to negligible cross-sections and asymmetries in some cases. Positivity constraints on the structure functions and parton densities are constructed and discussed. The cross-section asymmetries at very ...

ar X iv : h ep - p h / 00 06 08 2 v 2 1 3 Ju n 20 00 LUNFD 6 / ( NFFL - 7187 ) 2000 PHOTON STRUCTURE AT HERA

The structure of the virtual photon and its contribution to small x processes in deep inelastic scattering at HERA is discussed.

ar X iv : h ep - e x / 04 06 05 8 v 1 2 2 Ju n 20 04 QCD Studies at LEP

Studies of hadronic final states of e + e − annihilations at LEP are reviewed. The topics included cover hadronic event shapes, measurements of αs, determinations of QCD colour factors and tests of the non-Abelian gauge structure of QCD, differences between quark and gluon jets, QCD with heavy quarks and selected results of two-photon scattering processes.

ar X iv : h ep - p h / 06 04 13 0 v 1 1 4 A pr 2 00 6 The αα 2 s corrections to the first moment of the polarized virtual photon structure function

We present the next-to-next-to-leading order (αα s) corrections to the first moment of the polarized virtual photon structure function g 1 (x,Q , P ) in the kinematical region Λ ≪ P 2 ≪ Q, where −Q(−P ) is the mass squared of the probe (target) photon and Λ is the QCD scale parameter. In order to evaluate the three-loop-level photon matrix element of the flavor singlet axial current, we resort ...