STI Publications - View Publication Form #16836
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Publication Information
| Title | The pole position of the a1(1260) resonance in a three-body unitary framework | ||||
| 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 | ||||
| Author(s) | Daniel Sadasivan, Andrei Alexandru, Hakan Akdag, Felipe Amorim, Ruairi Brett, C. Culver, Michael Doring, Frank Lee, Maxim Mai | ||||
| Publication Date | March 2022 | ||||
| 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), NSF PHY-2012289, DE-SC0016582 | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | No | ||||
| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physical Review D |
| Refereed | Yes |
| Volume | 105 |
| Issue | |
| Page(s) | 054020 |
Attachments/Datasets/DOI Link
| Document(s) |
A1_Pole-1.pdf
(STI Document)
PhysRevD.105.054020.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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