Disentangling the Dynamical Origin of P11 Nucleon Resonances
Journal Article
·
· Physical Review Letters
The dynamical origins of the two poles associated with the Roper resonance are examined. Both of them together with the next higher resonance in the P11 partial wave are found to have the same originating bare state, indicating that the coupling to the meson-baryon continuum induces multiple observed resonances from the same bare state. Concerning other partial waves, the resonance poles extracted within the same multi-channels multi-resonances model of pi N reactions are compared to those listed by the Particle Data Group (PDG). Within our reaction model, all the identified resonances consist of a core state and meson-baryon components.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 978695
- Report Number(s):
- JLAB-THY-09-1063; DOE/OR/23177-0972; PRLTAO; TRN: US1003030
- Journal Information:
- Physical Review Letters, Vol. 104, Issue 1; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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