Coupled-channel approach to isotensor $πππ$ scattering from lattice QCD
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arXiv
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| Autori principali: | , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866908783567962112 |
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| author | Feng, Yuchuan Culver, Chris Döring, Michael Mai, Maxim Alexandru, Andrei Lee, Frank X. |
| author_facet | Feng, Yuchuan Culver, Chris Döring, Michael Mai, Maxim Alexandru, Andrei Lee, Frank X. |
| contents | The quest to understand three-body dynamics from first-principle QCD includes the study of non-resonant and resonant systems. The isospin $I=2$ system is of particular interest having no three-body resonance but featuring a resonance in a sub-channel, while also being a coupled-channel problem. In this study, we calculate the finite-volume spectrum from lattice QC at two different pion masses, map the amplitude to the infinite volume through a generalized FVU three-body quantization condition, investigate the limit of a narrow $ρ$, and compare with an effective Lagrangian prediction at leading order. Chiral extrapolations between different pion masses are performed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_16916 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Coupled-channel approach to isotensor $πππ$ scattering from lattice QCD Feng, Yuchuan Culver, Chris Döring, Michael Mai, Maxim Alexandru, Andrei Lee, Frank X. High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory The quest to understand three-body dynamics from first-principle QCD includes the study of non-resonant and resonant systems. The isospin $I=2$ system is of particular interest having no three-body resonance but featuring a resonance in a sub-channel, while also being a coupled-channel problem. In this study, we calculate the finite-volume spectrum from lattice QC at two different pion masses, map the amplitude to the infinite volume through a generalized FVU three-body quantization condition, investigate the limit of a narrow $ρ$, and compare with an effective Lagrangian prediction at leading order. Chiral extrapolations between different pion masses are performed. |
| title | Coupled-channel approach to isotensor $πππ$ scattering from lattice QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2601.16916 |