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Meson spectroscopy from spectral densities in lattice gauge theories

Maurizio Piai Orcid Logo, Ed Bennett Orcid Logo, luigi del debbio Orcid Logo, Niccolo Forzano, Ryan C. Hill Orcid Logo, Deog Ki Hong Orcid Logo, Hi Hsiao Orcid Logo, Jong-Wan Lee Orcid Logo, C.-J. David Lin Orcid Logo, Biagio Lucini Orcid Logo, Alessandro Lupo Orcid Logo, Davide Vadacchino Orcid Logo, Fabian Zierler

Phys Rev D

Swansea University Authors: Maurizio Piai Orcid Logo, Ed Bennett Orcid Logo, Niccolo Forzano, Biagio Lucini Orcid Logo, Fabian Zierler

Abstract

Spectral densities encode non-perturbative information that enters the calculation of a plethora of physical observables in strongly coupled field theories. Phenomenological applications encompass aspects of standard-model hadronic physics, observable at current colliders, as well as correlation fun...

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Phenomenological applications encompass aspects of standard-model hadronic physics, observable at current colliders, as well as correlation functions characterizing new physics proposals, testable in future experiments. By making use of numerical data produced in a Sp(4) lattice gauge theory with matter transforming in an admixture of fundamental and 2-index antisymmetric representations of the gauge group, we perform a systematic study to demonstrate the effectiveness of recent technological progress in the reconstruction of spectral densities. To this purpose, we write and test new software packages that use energy-smeared spectral den- sities to analyze the mass spectrum of mesons. We assess the effectiveness of different smearing kernels and optimize the smearing parameters to the characteristics of available lattice ensembles. We generate new ensembles for the theory in consideration, with lattices that have a longer extent in the time direction with respect to the spatial ones. We run our tests on these ensembles, obtain- ing new results about the spectrum of light mesons and their excitations. 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spelling v2 67647 2024-09-11 Meson spectroscopy from spectral densities in lattice gauge theories 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false e1a8e7927d2b093acdc54e74eac95e38 0000-0002-1678-6701 Ed Bennett Ed Bennett true false e60be1aa4478b6e530f4bdf6c1cf9857 Niccolo Forzano Niccolo Forzano true false 7e6fcfe060e07a351090e2a8aba363cf 0000-0001-8974-8266 Biagio Lucini Biagio Lucini true false 7eb526fdce1693fc0b79f33e74cc182d Fabian Zierler Fabian Zierler true false 2024-09-11 BGPS Spectral densities encode non-perturbative information that enters the calculation of a plethora of physical observables in strongly coupled field theories. Phenomenological applications encompass aspects of standard-model hadronic physics, observable at current colliders, as well as correlation functions characterizing new physics proposals, testable in future experiments. By making use of numerical data produced in a Sp(4) lattice gauge theory with matter transforming in an admixture of fundamental and 2-index antisymmetric representations of the gauge group, we perform a systematic study to demonstrate the effectiveness of recent technological progress in the reconstruction of spectral densities. To this purpose, we write and test new software packages that use energy-smeared spectral den- sities to analyze the mass spectrum of mesons. We assess the effectiveness of different smearing kernels and optimize the smearing parameters to the characteristics of available lattice ensembles. We generate new ensembles for the theory in consideration, with lattices that have a longer extent in the time direction with respect to the spatial ones. We run our tests on these ensembles, obtain- ing new results about the spectrum of light mesons and their excitations. We make available our algorithm and software for the extraction of spectral densities, that can be applied to theories with other gauge groups, including the theory of strong interactions (QCD) governing hadronic physics in the standard model. Journal Article Phys Rev D 0 0 0 0001-01-01 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required 2024-09-11T22:56:05.8163175 2024-09-11T09:22:52.2136532 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Maurizio Piai 0000-0002-2251-0111 1 Ed Bennett 0000-0002-1678-6701 2 luigi del debbio 0000-0003-4246-3305 3 Niccolo Forzano 4 Ryan C. Hill 0000-0003-2383-940X 5 Deog Ki Hong 0000-0002-3923-4184 6 Hi Hsiao 0000-0002-8522-5190 7 Jong-Wan Lee 0000-0002-4616-2422 8 C.-J. David Lin 0000-0003-3743-0840 9 Biagio Lucini 0000-0001-8974-8266 10 Alessandro Lupo 0000-0001-9661-7811 11 Davide Vadacchino 0000-0002-5783-5602 12 Fabian Zierler 13 67647__31291__4c5dfe46ce1b4f16ac3cb92c4975e532.pdf 2405.01388v2.pdf 2024-09-11T09:30:13.7999378 Output 2426402 application/pdf Accepted Manuscript true false 269 Ed Bennett 0000-0002-1678-6701 E.J.Bennett@Swansea.ac.uk true doi:10.5281/zenodo.11048346. false 270 Ed Bennett 0000-0002-1678-6701 E.J.Bennett@Swansea.ac.uk true 10.5281/zenodo.11048300 false
title Meson spectroscopy from spectral densities in lattice gauge theories
spellingShingle Meson spectroscopy from spectral densities in lattice gauge theories
Maurizio Piai
Ed Bennett
Niccolo Forzano
Biagio Lucini
Fabian Zierler
title_short Meson spectroscopy from spectral densities in lattice gauge theories
title_full Meson spectroscopy from spectral densities in lattice gauge theories
title_fullStr Meson spectroscopy from spectral densities in lattice gauge theories
title_full_unstemmed Meson spectroscopy from spectral densities in lattice gauge theories
title_sort Meson spectroscopy from spectral densities in lattice gauge theories
author_id_str_mv 3ce295f2c7cc318bac7da18f9989d8c3
e1a8e7927d2b093acdc54e74eac95e38
e60be1aa4478b6e530f4bdf6c1cf9857
7e6fcfe060e07a351090e2a8aba363cf
7eb526fdce1693fc0b79f33e74cc182d
author_id_fullname_str_mv 3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
e1a8e7927d2b093acdc54e74eac95e38_***_Ed Bennett
e60be1aa4478b6e530f4bdf6c1cf9857_***_Niccolo Forzano
7e6fcfe060e07a351090e2a8aba363cf_***_Biagio Lucini
7eb526fdce1693fc0b79f33e74cc182d_***_Fabian Zierler
author Maurizio Piai
Ed Bennett
Niccolo Forzano
Biagio Lucini
Fabian Zierler
author2 Maurizio Piai
Ed Bennett
luigi del debbio
Niccolo Forzano
Ryan C. Hill
Deog Ki Hong
Hi Hsiao
Jong-Wan Lee
C.-J. David Lin
Biagio Lucini
Alessandro Lupo
Davide Vadacchino
Fabian Zierler
format Journal article
container_title Phys Rev D
institution Swansea University
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 1
active_str 0
description Spectral densities encode non-perturbative information that enters the calculation of a plethora of physical observables in strongly coupled field theories. Phenomenological applications encompass aspects of standard-model hadronic physics, observable at current colliders, as well as correlation functions characterizing new physics proposals, testable in future experiments. By making use of numerical data produced in a Sp(4) lattice gauge theory with matter transforming in an admixture of fundamental and 2-index antisymmetric representations of the gauge group, we perform a systematic study to demonstrate the effectiveness of recent technological progress in the reconstruction of spectral densities. To this purpose, we write and test new software packages that use energy-smeared spectral den- sities to analyze the mass spectrum of mesons. We assess the effectiveness of different smearing kernels and optimize the smearing parameters to the characteristics of available lattice ensembles. We generate new ensembles for the theory in consideration, with lattices that have a longer extent in the time direction with respect to the spatial ones. We run our tests on these ensembles, obtain- ing new results about the spectrum of light mesons and their excitations. We make available our algorithm and software for the extraction of spectral densities, that can be applied to theories with other gauge groups, including the theory of strong interactions (QCD) governing hadronic physics in the standard model.
published_date 0001-01-01T22:56:06Z
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score 11.028798

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