Roper resonance and πN phase shift in the Skyrme model with defect

G. E. Brown, H. Q. Song, R. K. Su, K. F. Liu

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The quantum fluctuations of the two-phase Skyrme soliton model of the nucleon is formulated. The p-wave πN phase shift and the Roper to πN decay width are calculated as a function of the equlibrium defect radius R0. It is found that there is a preferred region of R0 between 0.4 and 0.5 fm where the experimental width can be fitted. It is also found that the region of R0 between 0.1 and 0.36 fm should be excluded in the model due to its instability against small oscillations.

Original languageEnglish
Pages (from-to)573-582
Number of pages10
JournalNuclear Physics, Section A
Issue number4
StatePublished - Oct 20 1986

Bibliographical note

Funding Information:
and DOE grant No.

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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