Towards the Parton Densities of Polarized Photons at HERA
نویسندگان
چکیده
Di-jet photoproduction in polarized ep collisions at HERA is studied as a possible tool to determine the parton content of circularly polarized photons. The concept of the ‘effective parton density’ approximation is extended to the spin-dependent case. Talk presented by M. Stratmann at the workshop on ‘Polarized Protons at High Energies Accelerator Challenges and Physics Opportunities’, DESY, Germany, May 1999. Towards the Parton Densities of Polarized Photons at HERA M. Stratmann and W. Vogelsang a Department of Physics, University of Durham, Durham DH1 3LE, England b C.N. Yang Institute for Theoretical Physics, State University of New York at Stony Brook, NY-11794, USA Abstract: Di-jet photoproduction in polarized ep collisions at HERA is studied as a possible tool to determine the parton content of circularly polarized photons. The concept of the ‘effective parton density’ approximation is extended to the spindependent case.
منابع مشابه
Polarized Parton Densities and Processes
The main goals of ‘spin physics’ are recalled, and some theoretical and phenomenological aspects of longitudinally polarized deep inelastic scattering and other hard processes are reviewed. The spin dependent parton densities of protons and photons and polarized fragmentation functions are introduced, and the relevant theoretical framework in next-to-leading order QCD is briefly summarized. Tec...
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