Nucleon scattering from lattice QCD
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Accesso online: | |
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| _version_ | 1866916857832800256 |
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| author | Morningstar, Colin |
| author_facet | Morningstar, Colin |
| contents | Recent results from lattice QCD on baryon resonances and meson-baryon, baryon-baryon scattering are presented. Such scattering processes and resonances can be determined in lattice QCD by first obtaining the finite-volume energy spectrum of stationary states involving meson-baryon and baryon-baryon systems. A well-known quantization condition involving the scattering $K$-matrix and a complicated ``box matrix'' also yields a finite-volume energy spectrum. By appropriately parametrizing the scattering $K$-matrix, the best fit values of the $K$-matrix parameters are those which produce a finite-volume spectrum which best matches that obtained from lattice QCD. The $Δ$ resonance, a recent study of the two-pole nature of scattering near the $Λ(1405)$, and $NN$ scattering in the $SU(3)$ flavor limit are highlighted. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_01950 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Nucleon scattering from lattice QCD Morningstar, Colin High Energy Physics - Lattice Recent results from lattice QCD on baryon resonances and meson-baryon, baryon-baryon scattering are presented. Such scattering processes and resonances can be determined in lattice QCD by first obtaining the finite-volume energy spectrum of stationary states involving meson-baryon and baryon-baryon systems. A well-known quantization condition involving the scattering $K$-matrix and a complicated ``box matrix'' also yields a finite-volume energy spectrum. By appropriately parametrizing the scattering $K$-matrix, the best fit values of the $K$-matrix parameters are those which produce a finite-volume spectrum which best matches that obtained from lattice QCD. The $Δ$ resonance, a recent study of the two-pole nature of scattering near the $Λ(1405)$, and $NN$ scattering in the $SU(3)$ flavor limit are highlighted. |
| title | Nucleon scattering from lattice QCD |
| topic | High Energy Physics - Lattice |
| url | https://arxiv.org/abs/2504.01950 |