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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…
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…