• U Mosel

      Articles written in Pramana – Journal of Physics

    • Hadrons in medium

      U Mosel

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      In these lectures I first give the motivation for investigations of in-medium properties of hadrons. I discuss the relevant symmetries of QCD and how they might affect the observed hadron properties. I then discuss at length the observable consequences of in-medium changes of hadronic properties in reactions with elementary probes, and in particular photons, on nuclei. Here I put an emphasis on new experiments on changes of the σ- and ω-mesons in medium

    • Dilepton production in nucleon–nucleon collisions around 1 GeV/nucleon: A theoretical update

      R Shyam U Mosel

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      We present a fully relativistic and gauge invariant framework for calculating the cross-sections of dilepton production in nucleon–nucleon ($N N$) collisions which is based on the meson-exchange approximation for the $N N$ scattering amplitudes. Predictions of our model are compared with those of other covariant models that have been used to describe this reaction. We discuss the comparison of our calculations with the old DLS and the recent HADES data.

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