期刊
PHYSICAL REVIEW LETTERS
卷 104, 期 4, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.042302
关键词
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资金
- JSPS, Kakenhi [20540270]
- U.S. D.O.E. [DE-AC02-06CH11357, DE-AC05-060R23177]
- CPAN [CSD 2007-0042]
- [FIS2008-1661]
- Grants-in-Aid for Scientific Research [20540270] Funding Source: KAKEN
We show that two almost degenerate poles near the pi Delta threshold and the next higher mass pole in the P-11 partial wave of pi N scattering evolve from a single bare state through its coupling with pi N, eta N, and pi pi N reaction channels. This finding provides new information on understanding the dynamical origins of the Roper N* (1440) and N* (1710) resonances listed by Particle Data Group. Our results for the resonance poles in other pi N partial waves are also presented.
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