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Time advancement in resonance regions of pi-N scattering

N. G. Kelkar

hep-pharXiv:hep-ph/0205188

Abstract

We evaluate the time delay in some of the established resonance regions of πN 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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