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How to extract the scattering length from production reactions
A. Gasparyan, J. Haidenbauer, C. Hanhart +1
A dispersion integral is derived that allows one to relate directly (spin dependent) invariant mass spectra, measured in a large-momentum transfer reaction such as $pp\to K^+p…
Hadron Physics at COSY
A. Gillitzer, C. Hanhart, V. Kleber +4
The workshop 'Hadron Physics at COSY' held from July 7th to July 10th 2003 in Bad Honnef brought together experimentalists and theoreticians from various fields of hadron physics t…
The He scattering length revisited
A. Sibirtsev, J. Haidenbauer, C. Hanhart +1
The possible existence of -mesic nuclei poses an interesting and still open issue of research. Since the occurence of such -nucleus bound states is reflected in the correspon…
Evidence that the a0(980) and f0(980) are not elementary particles
V. Baru, J. Haidenbauer, C. Hanhart +2
We study the interesting problem of whether it is possible to distinguish composite from elementary particles. In particular we generalize a model-independent approach of S. Weinbe…
Pion-nucleon scattering in a meson-exchange model
A. M. Gasparyan, J. Haidenbauer, C. Hanhart +1
The pi-N interaction is studied within a meson-exchange model and in a coupled-channels approach which includes the channels pi-N, eta-N, as well as three effective pi-pi-N channel…
Investigating scalar meson mixing in nucleon--nucleon and deuteron--deuteron collisions
C. Hanhart
The advantages to study charge--symmetry breaking and especially the phenomenon of f0-a0 mixing in nucleon--nucleon and deuteron--deuteron induced reactions are discussed.