Sigma-term physics
J. Gasser, M. E. Sainio
Abstract
We consider sigma-terms in ππ, πN and K N scattering. While the state of the art in ππ is in principle crystal clear, the kaon-nucleon case is largely unexplored. The pion-nucleon system is in-between. We propose a list of topics to be investigated in kaon-nucleon scattering, in order to make optimal use of the precision data expected from DEAR.
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