Bruno, M. and Giusti, L. and Saccardi, M. (2024) On the prediction of spectral densities from Lattice QCD. Il nuovo cimento C, 47 (4). pp. 1-5. ISSN 1826-9885
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Abstract
Hadronic spectral densities play a pivotal role in particle physics, a prime example being the R-ratio defined from electron-positron scattering into hadrons. To predict them from first principles using Lattice QCD, we face a numerically ill-posed inverse problem, due to the Euclidean signature adopted in practical simulations. Here we present a recent numerical analysis of the vector isovector spectral density extracted using the multi-level algorithm (recently extended also to the case of dynamical fermions) and discuss its implications.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 11 Sep 2024 15:38 |
| Last Modified: | 11 Sep 2024 15:38 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23150 |
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