Kavli Affiliate: Jonathan Rosner
| First 5 Authors: Jonathan L. Rosner, , , ,
| Summary:
The opening of a new S-wave threshold is frequently accompanied by an abrupt dip in the magnitude of an amplitude for an already-open channel. One familiar example is the behavior of the I=0 S-wave $ππ$ scattering amplitude at $K bar K$ threshold. Numerous other examples of this phenomenon in recent data are noted, and a unified description of the underlying dynamics is sought.
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