Suzuki N, Juliá-Díaz B, Kamano H, Lee TSH, Matsuyama A, Sato T. Disentangling the dynamical origin of P11 nucleon resonances.
Phys Rev Lett 2010;
104:042302. [PMID:
20366701 DOI:
10.1103/physrevlett.104.042302]
[Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2009] [Indexed: 05/29/2023]
Abstract
We show that two almost degenerate poles near the piDelta threshold and the next higher mass pole in the P11 partial wave of piN scattering evolve from a single bare state through its coupling with piN, etaN, and pipiN 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 piN partial waves are also presented.
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