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Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations

Maurizio Piai Orcid Logo, Fabian Zierler, Ed Bennett Orcid Logo, Niccolo Forzano, Deog Ki Hong Orcid Logo, Ho Hsiao Orcid Logo, Jong-Wan Lee Orcid Logo, C.-J. David Lin Orcid Logo, Biagio Lucini Orcid Logo, Davide Vadacchino Orcid Logo

Lattice2024

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

Abstract

We measure the masses of the pseudoscalar flavour-singlet meson states in the (4) gauge theory coupled to two Dirac fermions transforming in the fundamental representation and three Dirac fermions in the antisymmetric representation. This theory provides a compelling ultraviolet completion for the m...

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spelling v2 68044 2024-10-22 Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 7eb526fdce1693fc0b79f33e74cc182d Fabian Zierler Fabian Zierler 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 2024-10-22 BGPS We measure the masses of the pseudoscalar flavour-singlet meson states in the (4) gauge theory coupled to two Dirac fermions transforming in the fundamental representation and three Dirac fermions in the antisymmetric representation. This theory provides a compelling ultraviolet completion for the minimal composite Higgs model implementing also partial compositeness for the top quark. The spectrum contains two, comparatively light, pseudoscalar flavour-singlet states, which mix with one another. One of them is a Nambu-Goldstone boson (in the massless limit), whereas the other receives a mass from the (1) axial anomaly. We demonstrate how to measure the mixing between these two states. For moderately heavy fermion masses, we find that the two wave functions are dominated by one of the fermion representations, mixing effects being small. Conference Paper/Proceeding/Abstract Lattice2024 0 0 0 0001-01-01 COLLEGE NANME Biosciences Geography and Physics School COLLEGE CODE BGPS Swansea University Not Required 2024-10-22T19:45:33.4530460 2024-10-22T18:21:38.8751975 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Maurizio Piai 0000-0002-2251-0111 1 Fabian Zierler 2 Ed Bennett 0000-0002-1678-6701 3 Niccolo Forzano 4 Deog Ki Hong 0000-0002-3923-4184 5 Ho Hsiao 0000-0002-8522-5190 6 Jong-Wan Lee 0000-0002-4616-2422 7 C.-J. David Lin 0000-0003-3743-0840 8 Biagio Lucini 0000-0001-8974-8266 9 Davide Vadacchino 0000-0002-5783-5602 10 68044__32677__95e1bba2842a4c0aa93023a2f0641f74.pdf 2410.11412v1.pdf 2024-10-22T18:26:52.1311077 Output 653149 application/pdf Accepted Manuscript true false
title Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
spellingShingle Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
Maurizio Piai
Fabian Zierler
Ed Bennett
Niccolo Forzano
Biagio Lucini
title_short Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
title_full Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
title_fullStr Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
title_full_unstemmed Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
title_sort Progress on pseudoscalar flavour-singlets in Sp(4) with mixed fermion representations
author_id_str_mv 3ce295f2c7cc318bac7da18f9989d8c3
7eb526fdce1693fc0b79f33e74cc182d
e1a8e7927d2b093acdc54e74eac95e38
e60be1aa4478b6e530f4bdf6c1cf9857
7e6fcfe060e07a351090e2a8aba363cf
author_id_fullname_str_mv 3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
7eb526fdce1693fc0b79f33e74cc182d_***_Fabian Zierler
e1a8e7927d2b093acdc54e74eac95e38_***_Ed Bennett
e60be1aa4478b6e530f4bdf6c1cf9857_***_Niccolo Forzano
7e6fcfe060e07a351090e2a8aba363cf_***_Biagio Lucini
author Maurizio Piai
Fabian Zierler
Ed Bennett
Niccolo Forzano
Biagio Lucini
author2 Maurizio Piai
Fabian Zierler
Ed Bennett
Niccolo Forzano
Deog Ki Hong
Ho Hsiao
Jong-Wan Lee
C.-J. David Lin
Biagio Lucini
Davide Vadacchino
format Conference Paper/Proceeding/Abstract
container_title Lattice2024
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 We measure the masses of the pseudoscalar flavour-singlet meson states in the (4) gauge theory coupled to two Dirac fermions transforming in the fundamental representation and three Dirac fermions in the antisymmetric representation. This theory provides a compelling ultraviolet completion for the minimal composite Higgs model implementing also partial compositeness for the top quark. The spectrum contains two, comparatively light, pseudoscalar flavour-singlet states, which mix with one another. One of them is a Nambu-Goldstone boson (in the massless limit), whereas the other receives a mass from the (1) axial anomaly. We demonstrate how to measure the mixing between these two states. For moderately heavy fermion masses, we find that the two wave functions are dominated by one of the fermion representations, mixing effects being small.
published_date 0001-01-01T19:45:30Z
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score 11.0351515

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