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152 papers · 1 filter
Neutron-Proton Mass Difference in Nuclear Matter and in Finite Nuclei and the Nolen-Schiffer Anomaly
Ulf-G. Meißner, A. M. Rakhimov, A. Wirzba +1
The neutron-proton mass difference in (isospin asymmetric) nuclear matter and finite nuclei is studied in the framework of a medium-modified Skyrme model. The proposed effective La…
QPACE -- a QCD parallel computer based on Cell processors
H. Baier, H. Boettiger, M. Drochner +32
QPACE is a novel parallel computer which has been developed to be primarily used for lattice QCD simulations. The compute power is provided by the IBM PowerXCell 8i processor, an e…
The reaction ppbar -> Lambda_c-Lambda_cbar close to threshold
J. Haidenbauer, G. Krein
Predictions for the charm-production reaction antiproton-proton -> antiLambda_c-Lambda_c for energies near the threshold are presented. The calculations are performed in a meson-ex…
Similarities between structural distortions under pressure and chemical doping in superconducting BaFe2As2
Simon A. J. Kimber, Andreas Kreyssig, Yu-Zhong Zhang +11
The discovery of a new family of high Tc materials, the iron arsenides (FeAs), has led to a resurgence of interest in superconductivity. Several important traits of these materials…
Invariant mass distributions for the pp to p p eta reaction at Q=10 MeV
P. Moskal, R. Czyzykiewicz, E. Czerwinski +20
Proton-proton and proton-eta invariant mass distributions and the total cross section for the pp to pp eta reaction have been determined near the threshold at an excess energy of Q…
Neutron diffraction study on phase transition and thermal expansion of SrFeAsF
Y. Xiao, Y. Su, R. Mittal +9
The magnetic ordering and crystal structure of iron pnictide SrFeAsF was investigated by using neutron powder diffraction method. With decreasing temperature, the tetragonal to ort…