Microscopic cross sections: An utopia?
نویسندگان
چکیده
منابع مشابه
Microscopic calculation of in-medium proton-proton cross sections.
We derive in-medium proton-proton cross sections in a microscopic model based upon the Bonn nucleon-nucleon potential and the Dirac-Brueckner approach for nuclear matter. We demonstrate the difference between protonproton and neutron-proton cross sections and point out the need to distinguish carefully between the two cases. We also find substantial differences between our in-medium cross secti...
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We derive in-medium nucleon-nucleon (NN) cross sections in a microscopic model. Our calculations are based upon the Bonn NN potential and the Dirac-Brueckner approach for nuclear matter. We consider energies up to 300 MeV (in the laboratory frame) and densities up to twice nuclear matter density. Our results deviate substantially from cross section parametrizations that are commonly used in the...
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A recently developed model for ρ-meson propagation in dense hadronic matter is applied to total photoabsorption cross sections in γ-proton and γ-nucleus reactions. Within the vector dominance model the photon coupling to the virtual pion cloud of the nucleon, two-body meson-exchange currents, as well as γ-nucleon resonances are included. Whereas the γp reaction is determined by the low-density ...
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The energy dependence of a given process teaches us about the dynamics of this process. If the energy dependence can be described by a Reggetype approach a la Donnachie and Landshoff [1] we call the process soft. The total hadron-proton cross sections dependence on center-of-mass energy exemplifies the behaviour of soft processes.. If the energy dependence can be described by perturbative QCD (...
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ژورنال
عنوان ژورنال: EPJ Web of Conferences
سال: 2010
ISSN: 2100-014X
DOI: 10.1051/epjconf/20100802004