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arXiv · hep-ph/0208197

Time Delay Plots of Unflavoured Baryons

N. G. Kelkar·M. Nowakowski·K. P. Khemchandani·Sudhir R. Jain
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Abstract

We explore the usefulness of the existing relations between the $S$-matrix and time delay in characterizing baryon resonances in pion-nucleon scattering. We draw attention to the fact that the existence of a positive maximum in time delay is a necessary criterion for the existence of a resonance and should be used as a constraint in conventional analyses which locate resonances from poles of the $S$-matrix and Argand diagrams. The usefulness of the time delay plots of resonances is demonstrated through a detailed analysis of the time delay in several partial waves of $πN$ elastic scattering.

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BibTeXRIS

N. G. Kelkar, M. Nowakowski, K. P. Khemchandani, Sudhir R. Jain. 2004-01-10. Time Delay Plots of Unflavoured Baryons. https://doi.org/10.1016/j.nuclphysa.2003.10.018

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