Publications
Publication Information
| Title | The pole position of the a1(1260) resonance in a three-body unitary framework |
| Authors | Daniel Sadasivan, Andrei Alexandru, Hakan Akdag, Felipe Amorim, Ruairi Brett, C. Culver, Michael Doring, Frank Lee, Maxim Mai |
| JLAB number | JLAB-THY-21-3533 |
| LANL number | arXiv:2112.03355 |
| Other number | DOE/OR/23177-5361 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
| Other Funding: | NSF PHY-2012289 DE-SC0016582 |
|
Journal Compiled for Physical Review D Volume 105 Page(s) 054020 Refereed | |
| Publication Abstract: | Masses, widths, and branching ratios of hadronic resonances are quantified by their pole positions and residues with respect to transition amplitudes on the Riemann sheets of the complex energy- plane. In this study we discuss the analytic structure in the physical energy region of three-body scattering amplitudes on such manifolds. As an application, we determine the pole position of the a1(1260) meson from the ALEPH experiment by allowing for ?? coupled channels in S and D wave. We find it to be ?s0 = (1232+15+9?0.2?11 ?i266+0.3+15?22?27 ) MeV |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.105.054020 |
| Accepted Manuscript: | PhysRevD.105.054020.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |