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QCD Analysis of Unpolarized and Polarized Lambda - Baryon Production in Leading and Next-to-Leading Order
D. de Florian, M. Stratmann, W. Vogelsang
We analyze experimental data for the production of Lambda baryons in e^+e^- annihilation in terms of scale dependent, QCD evolved, Lambda fragmentation functions. Apart from the va…
Photoproduction Processes in Polarized ep - Collisions at HERA
J. M. Butterworth, N. Goodman, M. Stratmann +1
We study various conceivable photoproduction reactions in a polarized ep collider mode of HERA with respect to their sensitivity to the proton's polarized gluon distribution. A spe…
Polarized Lambda Production at HERA
D. de Florian, M. Stratmann, W. Vogelsang
We study the prospects for HERA with polarized electron and/or proton beams to determine the functions describing the fragmentation of a longitudinally polarized parton into a pola…
Radiative Parton Model Analysis of Recent Polarized DIS Data
M. Stratmann
An updated next-to-leading order (NLO) QCD analysis of the spin asymmetries A_1^N(x,Q^2) and parton distributions delta f(x,Q^2) in longitudinally polarized deep-inelastic lepton-n…
Soffer's inequality and the transversely polarized Drell-Yan process at next-to-leading order
O. Martin, A. Schaefer, M. Stratmann +1
We check numerically if Soffer's inequality for quark distributions is preserved by next-to-leading order QCD evolution. Assuming that the inequality is saturated at a low hadronic…
Some Aspects of Polarized ep Scattering at HERA
M. Stratmann, W. Vogelsang
We study photoproduction reactions in a polarized ep collider mode of HERA at sqrt(s)=298 GeV. We examine the sensitivity of the cross sections and their asymmetries to the proton'…