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

B. Blankleider; G. E. Walker

doi:10.1016/0370-2693(85)90497-6

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

B. Blankleider, G. E. Walker

Research output: Contribution to journal › Article › peer-review

24 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 language	English
Pages (from-to)	291-294
Number of pages	4
Journal	Physics Letters B
Volume	152
Issue number	5-6
DOIs	https://doi.org/10.1016/0370-2693(85)90497-6
Publication status	Published - 14 Mar 1985
Externally published	Yes

Bibliographical note

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

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10.1016/0370-2693(85)90497-6Licence: In Copyright

Cite this

@article{c2fb0e65f10d4094b164ad95e41345c1,

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

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.",

author = "B. Blankleider and Walker, {G. E.}",

note = "Funding Information: This work is supporteidn part by the National ScienceF oundation.",

year = "1985",

month = mar,

day = "14",

doi = "10.1016/0370-2693(85)90497-6",

language = "English",

volume = "152",

pages = "291--294",

journal = "Physics Letters B",

issn = "0370-2693",