2014

Hadron mass scaling near the s-wave threshold

Hyodo, Tetsuo

Understand

The influence of a two-hadron threshold is studied for the hadron mass scaling with respect to some quantum chromodynamics parameters.

  • A quantum mechanical model is introduced to describe the system with a one-body bare state coupled with a single elastic two-body scattering.
  • The general behavior of the energy of the bound and resonance state near the two-body threshold for a local potential is derived from the expansion of the Jost function around the threshold.
  • It is shown that the same scaling holds for the nonlocal potential induced by the coupling to a bare state.

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