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Title: Disentangling the Dynamical Origin of P11 Nucleon Resonances
Author: Suzuki, N.
Juliá-Díaz, Bruno
Kamano, H.
Lee, T. S. H.
Matsuyama, A.
Sato, T.
Keywords: Física de partícules
Massa (Física)
Particle physics
Mass (Physics)
Issue Date: 27-Jan-2010
Publisher: American Physical Society
Abstract: We show that two almost degenerate poles near the π Δ threshold and the next higher mass pole in the P 11 partial wave of π N scattering evolve from a single bare state through its coupling with π N , η N , and π π 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 π N partial waves are also presented.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2010, vol. 104, num. 4, p. 042302
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))
Articles publicats en revistes (Física Quàntica i Astrofísica)

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