Time advancement in resonance regions of pi-N scattering
classification
✦ hep-ph
hep-exnucl-th
keywords
timeregionsadvancementdelayresonanceresonancesscatteringaddition
read the original abstract
We evaluate the time delay in some of the established resonance regions of $\pi N$ elastic scattering. In addition to the positive peaks corresponding to resonances, we identify broad regions of negative time delay or time advancement which restrict the energy ranges within which the resonances can be located.
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