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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| Accesso online: | https://arxiv.org/abs/2506.16161 |
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| _version_ | 1866909872491069440 |
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| author | Salg, Miguel Romero-López, Fernando Jay, William I. |
| author_facet | Salg, Miguel Romero-López, Fernando Jay, William I. |
| contents | We present a novel procedure for analyzing the lattice-QCD spectrum via the finite-volume formalism to obtain constraints on multi-hadron scattering amplitudes at both real and complex energies. This approach combines a Bayesian reconstruction of the scattering amplitude on the real axis with Nevanlinna interpolation for analytic continuation to complex-valued energies. The method is non-parametric, inherently accounting for parametrization dependence within the uncertainty. We demonstrate the applicability of this approach using both toy data and real lattice-QCD data in resonant systems from the HadSpec and BaSc collaborations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_16161 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Bayesian Analysis and Analytic Continuation of Scattering Amplitudes from Lattice QCD Salg, Miguel Romero-López, Fernando Jay, William I. High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory We present a novel procedure for analyzing the lattice-QCD spectrum via the finite-volume formalism to obtain constraints on multi-hadron scattering amplitudes at both real and complex energies. This approach combines a Bayesian reconstruction of the scattering amplitude on the real axis with Nevanlinna interpolation for analytic continuation to complex-valued energies. The method is non-parametric, inherently accounting for parametrization dependence within the uncertainty. We demonstrate the applicability of this approach using both toy data and real lattice-QCD data in resonant systems from the HadSpec and BaSc collaborations. |
| title | Bayesian Analysis and Analytic Continuation of Scattering Amplitudes from Lattice QCD |
| topic | High Energy Physics - Lattice High Energy Physics - Phenomenology Nuclear Theory |
| url | https://arxiv.org/abs/2506.16161 |