Are some π-N resonances a manifestation of coupling to the π-Δ(1232) channel?

B. Blankleider, G. E. Walker

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

Using separable potentials for the processes πN → πN, πN → πΔ, and πΔ → πΔ, we investigate the possibility that some of the low lying resonances seen in π-N elastic scattering may be due to the opening of the threshold for π-Δ production. We find excellent fits to the P11, D13, D15, and S31 phase shifts and inelasticities without the need for introducing the P11(1440), D13(1520), D15(1675), and S31(1620) resonances explicitly. While not claiming that true particle resonances do not exist, our results indicate that coupling to the π - Δ channel should not be ignored.

Original languageEnglish
Pages (from-to)291-294
Number of pages4
JournalPhysics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume152
Issue number5-6
DOIs
Publication statusPublished - 14 Mar 1985
Externally publishedYes

Bibliographical note

Funding Information:
This work is supporteidn part by the National ScienceF oundation.

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