STI Publications - View Publication Form #9189
| Back to Search Results |
Publication Information
| Title | On the extraction of P11 resonances from pi N data | ||||
| Abstract | With the accuracy of the available P11 amplitudes of pi N scattering, we show that two resonance poles near the pi Delta threshold, obtained in several analyses, are stable against large variations of parameters within a dynamical coupled-channels analysis. The number of poles in the 1.5 GeV < W < 2 GeV region could be more than one, depending on how the structure of the single-energy solution of SAID is fitted. Our results indicate the need of more accurate pi N scattering data in the W > 1.6 GeV region for high precision resonance extractions. By considering various variation of the considered coupled-channels model and a model with a bare nucleon, we find that the two poles near pi Delta threshold are rather insensitive to the analytic structure of the amplitude in the W < m_N+m_pi unphysical region. | ||||
| Author(s) | Hiroyuki Kamano, Satoshi Nakamura, Harry Lee, Toru Sato | ||||
| Publication Date | June 2010 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Theory & Comp Physics / THEORY CENTER / THEORY CENTER | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
|
||||
| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review C |
| Refereed | Yes |
| Volume | 81 |
| Issue | 06 |
| Page(s) | 065207 |
Attachments/Datasets/DOI Link
| Document(s) |
1001.5083v2.pdf
(STI Document)
|
| DOI Link | |
| Dataset(s) | (none) |
| Back to Search Results |