Publications
Publication Information
| Title | A unitary coupled-channel three-body amplitude with pions and kaons |
| Authors | Yuchuan Feng, Fernando Gil, Michael Doring, Raquel Molina Peralta, Maxim Mai, Vanamali Shastry, Adam Szczepaniak |
| JLAB number | JLAB-THY-24-4107 |
| LANL number | arXiv:2407.08721 |
| Other number | DOE/OR/23177-7544 |
| Document Type(s) | (Journal Article) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Journal Compiled for Physical Review D Volume 110 Page(s) 094002 | |
| Publication Abstract: | Three-body dynamics above threshold is required for the reliable extraction of many amplitudes and resonances from experiment and lattice QCD. The S-matrix principle of unitarity can be used to construct dynamical coupled-channel approaches in which three particles scatter off each other, re-arranging two-body subsystems by particle exchange. This paper reports the development of a three-body coupled-channel, amplitude including pions and kaons. The unequal-mass amplitude contains two-body S- and P-wave subsystems (?isobars?) of all isospins, I = 0, 1/2, 1, 3/2, 2, and it also allows for transitions within a given isobar. The f0(500) (????), f0(980), ?(700),K? 0 (700) (????), and K?(892) resonances are included, apart from repulsive isobars. Different methods to evaluate the amplitude for physical momenta are discussed. Production amplitudes for a1 quantum numbers are shown as a proof of principle for the numerical implementation. |
| Experiment Numbers: | |
| Group: | THEORY CENTER |
| Document: | |
| DOI: | https://doi.org/10.1103/PhysRevD.110.094002 |
| Accepted Manuscript: | 2407.08721v2.pdf |
| Supporting Documents: | |
| Supporting Datasets: | |