Publications
Publication Information
| Title | Towards the Minimal Spectrum of Excited Baryons |
| Authors | Justin Landay, Maxim Mai, Michael Doring, Helmut Haberzettl, Kanzo Nakayama |
| JLAB number | JLAB-THY-18-2818 |
| LANL number | arXiv:1810.00075 |
| Other number | DOE/OR/23177-4551 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | DOE DE-SC0016582 NSF PIF PHY- 1415459 NSF Career PHY-1452055 |
|
Journal Compiled for Physical Review D Volume 99 Issue 01 Page(s) 016001 Refereed | |
| Publication Abstract: | In the light baryon sector the resonances can be broad and overlapping and are in most cases not directly visible in the cross section data. Automatized model selection techniques that introduce penalties for choosing particular resonance sets can be used to determine the minimally needed set of resonances to describe the data. Several possible penalization schemes for the occurrence of resonances are compared. As an application we perform a blindfold identification of hyperon resonances in the Kbar N -> K Xi reaction based on the Least Absolute Shrinkage and Selection Operator (LASSO) in combination with the Bayesian Information Criterion (BIC). We find ten resonances - out of the 21 above-threshold hyperon resonances with spin J <= 7/2 listed by the Particle Data Group. In traditional analyses, it is practically impossible to test the relevance of all resonances and their combinations that may potentially contribute to the reaction. By contrast, the present method proves capable of determining the relevant resonances among a relatively large pool of candidates. |
| Experiment Numbers: | other |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.99.016001 |
| Accepted Manuscript: | 1810.00075.pdf embargoed final, peer reviewed, accepted manuscript |
| Supporting Documents: | |
| Supporting Datasets: | |