@article{ZiemonsHerzogBosettietal.1992, author = {Ziemons, Karl and Herzog, H. and Bosetti, P. and Feinendegen, L. E.}, title = {Iterative image reconstruction with weighted pixel contribution to projection elements}, series = {European Journal of Nuclear Medicine}, volume = {19}, journal = {European Journal of Nuclear Medicine}, number = {8}, isbn = {1619-7089}, pages = {588 -- 588}, year = {1992}, language = {en} } @article{Ziemons1991, author = {Ziemons, Karl}, title = {Comparison of forward hadrons produced in muon interactions on nuclear targets and deuterium}, series = {Zeitschrift f{\"u}r Physik C Particles and Fields}, volume = {52}, journal = {Zeitschrift f{\"u}r Physik C Particles and Fields}, number = {1}, isbn = {1431-5858}, pages = {1 -- 11}, year = {1991}, abstract = {Differential multiplicities of forward produced hadrons in deep inelastic muon scattering on nuclear targets have been compared with those from deuterium. The ratios are observed to increase towards unity as the virtual photon energy increases with no significant dependence on the other muon kinematic variables. The hadron transverse momentum distribution is observed to be broadened in nuclear targets. The dependence on the remaining hadron variables is investigated and the results are discussed in the framework of intranuclear interaction models and in the context of the EMC effect.}, language = {en} } @article{ZiemonsHerzogFeinendegen1990, author = {Ziemons, Karl and Herzog, H. and Feinendegen, L. E.}, title = {Iterative image reconstruction with weighted pixel contribution to projection element}, series = {European Journal of Nuclear Medicine}, volume = {16}, journal = {European Journal of Nuclear Medicine}, number = {7}, isbn = {1619-7089}, pages = {403 -- 403}, year = {1990}, language = {en} } @article{Ziemons1989, author = {Ziemons, Karl}, title = {An investigation of the spin structure of the proton in deep inelastic scattering of polarised muons and polarised protons}, series = {Nuclear Physics B}, volume = {328}, journal = {Nuclear Physics B}, number = {1}, isbn = {0550-3213}, pages = {1 -- 35}, year = {1989}, abstract = {The spin asymmetry in deep inelastic scattering of longitudinally polarised muons by longitudinally polarised protons has been measured in the range 0.01<×<0.7. The spin dependent structure function g1(x) for the proton has been determined and, combining the data with earlier SLAC measurements, its integral over x found to be 0.126±0.010(stat.)±0.015(syst.), in disagreement with the Ellis-Jaffe sum rule. Assuming the validity of the Biorken sum rule, this result implies a significant negative value for the integral of g1 for the neutron. These integrals lead to the conclusion, in the na{\"i}ve quark parton model, that the total quark spin constitutes a rather small fraction of the spin of the nucleon. Results are also presented on the asymmetries in inclusive hadron production which are consistent with the above picture.}, language = {en} } @article{Ziemons1988, author = {Ziemons, Karl}, title = {A measurement of the spin asymmetry of the structure function g1 in deep inelastic muon-proton scattering}, series = {Physics Letters B}, volume = {206}, journal = {Physics Letters B}, number = {2}, isbn = {0370-2693}, pages = {364 -- 370}, year = {1988}, abstract = {The spin asymmetry in deep inelastic scattering of longitudinally polarised muons by longitudinally polarised protons has been measured over a large x range (0.01