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Covariant spin density matrix formalism for inelastic scattering of polarized leptons |
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| Authors: | H. Fraas |
| Affiliation: | 1. Physikalisches Institut der Universit?t Würzburg, Deutschland |
| Abstract: | Starting from a generalization of helicity to the case of spacelike momenta we give the spin density operator for the virtual photon in inelastic scattering of polarized, massive leptons. |
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