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Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory

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

Physical Review D, Volume: 109, Issue: 9

Swansea University Authors: Ed Bennett Orcid Logo, Biagio Lucini Orcid Logo, Maurizio Piai Orcid Logo

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DOI (Published version): 10.1103/physrevd.109.094512

Abstract

We report the results of lattice numerical studies of the Sp(4) gauge theory coupled to fermions (hyperquarks) transforming in the fundamental and two-index antisymmetric representations of the gauge group. This strongly-coupled theory is the minimal candidate for the ultraviolet completion of compo...

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Published in: Physical Review D
ISSN: 2470-0010 2470-0029
Published: American Physical Society (APS) 2024
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This strongly-coupled theory is the minimal candidate for the ultraviolet completion of composite Higgs models that facilitate the mechanism of partial compositeness for generating the top-quark mass. We measure the spectrum of the low-lying, half-integer spin, bound states composed of two fundamental and one antisymmetric hyperquarks, dubbed chimera baryons, in the quenched approximation.In this first systematic, non-perturbative study, we focus on the three lightest parity-even chimera- baryon states, in analogy with QCD, denoted as Λ(CB), Σ(CB) (both with spin 1/2), and Σ(CB)* (with spin 3/2). The spin-1/2 such states are candidates of the top partners. The extrapolation of our results to the continuum and massless-hyperquark limit is performed using formulae inspired by QCD heavy-baryon Wilson chiral perturbation theory. 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The work of D.K.H.wassupported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. NRF2017R1D1A1B06033701). The work of J.W.L. was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (Grant No. NRF-2018R1C1B3001379) and by IBS under the project code, IBS-R018-D1. The work of D.K.H. and J.W.L. was further supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2021R1A4A5031460). The work of H.H. and C.J.D.L. is supported by the TaiwaneseMoST grant No. 109-2112-M-009-006-MY3 andNSTCGrant No. 112-2112-M-A49-021-MY3. The workofB.L.andM.P.hasbeensupportedinpartbythe STFCConsolidatedGrantsNo. ST/P00055X/1,No. ST/ T000813/1,andNo.ST/X000648/1.B.L.andM.P.received fundingfromtheEuropeanResearchCouncil(ERC)under theEuropeanUnion’sHorizon2020researchandinnovation programunderGrantAgreementNo.813942.Theworkof B.L. is further supported inpart by theRoyal Society WolfsonResearchMeritAwardNo.WM170010andby theLeverhulmeTrustResearchFellowshipNo.RF-20204619. Thework ofD.V. is supported bySTFCunder ConsolidatedGrantNo.ST/X000680/1.Numerical simulations havebeenperformedon theSwanseaUniversity SUNBIRD cluster (part of the SupercomputingWales project)andAccelerateAIA100GPUsystem,onthelocal HPCclusters inPusanNationalUniversity(PNU) and in NationalYangMingChiaoTungUniversity(NYCU),andon theDiRACDataIntensiveserviceatLeicester.TheSwansea UniversitySUNBIRDsystemandAccelerateAI are part funded by the European Regional Development Fund (ERDF) via Welsh Government. 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spelling v2 65979 2024-04-08 Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory e1a8e7927d2b093acdc54e74eac95e38 0000-0002-1678-6701 Ed Bennett Ed Bennett true false 7e6fcfe060e07a351090e2a8aba363cf 0000-0001-8974-8266 Biagio Lucini Biagio Lucini true false 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 2024-04-08 MACS We report the results of lattice numerical studies of the Sp(4) gauge theory coupled to fermions (hyperquarks) transforming in the fundamental and two-index antisymmetric representations of the gauge group. This strongly-coupled theory is the minimal candidate for the ultraviolet completion of composite Higgs models that facilitate the mechanism of partial compositeness for generating the top-quark mass. We measure the spectrum of the low-lying, half-integer spin, bound states composed of two fundamental and one antisymmetric hyperquarks, dubbed chimera baryons, in the quenched approximation.In this first systematic, non-perturbative study, we focus on the three lightest parity-even chimera- baryon states, in analogy with QCD, denoted as Λ(CB), Σ(CB) (both with spin 1/2), and Σ(CB)* (with spin 3/2). The spin-1/2 such states are candidates of the top partners. The extrapolation of our results to the continuum and massless-hyperquark limit is performed using formulae inspired by QCD heavy-baryon Wilson chiral perturbation theory. Within the range of hyperquark masses in our simulations, we find that Σ(CB) is not heavier than Λ(CB). Journal Article Physical Review D 109 9 American Physical Society (APS) 2470-0010 2470-0029 23 5 2024 2024-05-23 10.1103/physrevd.109.094512 COLLEGE NANME Mathematics and Computer Science School COLLEGE CODE MACS Swansea University SU Library paid the OA fee (TA Institutional Deal) The work of E.B. has been supported by the UKRI ScienceandTechnologyFacilitiesCouncil(STFC)Research Software Engineering Fellowship No. EP/V052489/1, and by the Theoretical and Experimental Particle Physics at the Exascale Frontier Project No. EP/X017168/1. The work of D.K.H.wassupported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (Grant No. NRF2017R1D1A1B06033701). The work of J.W.L. was supported in part by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (Grant No. NRF-2018R1C1B3001379) and by IBS under the project code, IBS-R018-D1. The work of D.K.H. and J.W.L. was further supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (2021R1A4A5031460). The work of H.H. and C.J.D.L. is supported by the TaiwaneseMoST grant No. 109-2112-M-009-006-MY3 andNSTCGrant No. 112-2112-M-A49-021-MY3. The workofB.L.andM.P.hasbeensupportedinpartbythe STFCConsolidatedGrantsNo. ST/P00055X/1,No. ST/ T000813/1,andNo.ST/X000648/1.B.L.andM.P.received fundingfromtheEuropeanResearchCouncil(ERC)under theEuropeanUnion’sHorizon2020researchandinnovation programunderGrantAgreementNo.813942.Theworkof B.L. is further supported inpart by theRoyal Society WolfsonResearchMeritAwardNo.WM170010andby theLeverhulmeTrustResearchFellowshipNo.RF-20204619. Thework ofD.V. is supported bySTFCunder ConsolidatedGrantNo.ST/X000680/1.Numerical simulations havebeenperformedon theSwanseaUniversity SUNBIRD cluster (part of the SupercomputingWales project)andAccelerateAIA100GPUsystem,onthelocal HPCclusters inPusanNationalUniversity(PNU) and in NationalYangMingChiaoTungUniversity(NYCU),andon theDiRACDataIntensiveserviceatLeicester.TheSwansea UniversitySUNBIRDsystemandAccelerateAI are part funded by the European Regional Development Fund (ERDF) via Welsh Government. The DiRAC Data IntensiveserviceatLeicester isoperatedbytheUniversity ofLeicester ITServices,which formspart of theSTFC DiRACHPCFacility([120]).TheDiRACDataIntensive serviceequipmentatLeicesterwasfundedbyBEIScapital fundingviaSTFCcapitalGrantsNo.ST/K000373/1 and No. ST/R002363/1 andSTFCDiRACOperations grant No. ST/R001014/1. DiRAC is part of theNational eInfrastructure. 2024-05-28T16:46:38.1440435 2024-04-08T08:10:41.8538614 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Ed Bennett 0000-0002-1678-6701 1 Deog Ki Hong 0000-0002-3923-4184 2 Ho Hsiao 0000-0002-8522-5190 3 Jong-Wan Lee 0000-0002-4616-2422 4 C.-J. David Lin 0000-0003-3743-0840 5 Biagio Lucini 0000-0001-8974-8266 6 Maurizio Piai 0000-0002-2251-0111 7 Davide Vadacchino 0000-0002-5783-5602 8 65979__30471__115df9a955f24d01b3eec534dc64ec34.pdf 65979.VoR.pdf 2024-05-28T16:41:37.7012478 Output 3319529 application/pdf Version of Record true Released under the terms of the Creative Commons Attribution 4.0 International license. true eng https://creativecommons.org/licenses/by/4.0/ 241 Ed Bennett 0000-0002-1678-6701 e.j.bennett@swansea.ac.uk true 10.5281/zenodo.10819721 false 242 Ed Bennett 0000-0002-1678-6701 e.j.bennett@swansea.ac.uk true 10.5281/zenodo.10929539 false
title Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
spellingShingle Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
Ed Bennett
Biagio Lucini
Maurizio Piai
title_short Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
title_full Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
title_fullStr Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
title_full_unstemmed Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
title_sort Lattice investigations of the chimera baryon spectrum in the ⁢⁡(4) gauge theory
author_id_str_mv e1a8e7927d2b093acdc54e74eac95e38
7e6fcfe060e07a351090e2a8aba363cf
3ce295f2c7cc318bac7da18f9989d8c3
author_id_fullname_str_mv e1a8e7927d2b093acdc54e74eac95e38_***_Ed Bennett
7e6fcfe060e07a351090e2a8aba363cf_***_Biagio Lucini
3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
author Ed Bennett
Biagio Lucini
Maurizio Piai
author2 Ed Bennett
Deog Ki Hong
Ho Hsiao
Jong-Wan Lee
C.-J. David Lin
Biagio Lucini
Maurizio Piai
Davide Vadacchino
format Journal article
container_title Physical Review D
container_volume 109
container_issue 9
publishDate 2024
institution Swansea University
issn 2470-0010
2470-0029
doi_str_mv 10.1103/physrevd.109.094512
publisher American Physical Society (APS)
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 report the results of lattice numerical studies of the Sp(4) gauge theory coupled to fermions (hyperquarks) transforming in the fundamental and two-index antisymmetric representations of the gauge group. This strongly-coupled theory is the minimal candidate for the ultraviolet completion of composite Higgs models that facilitate the mechanism of partial compositeness for generating the top-quark mass. We measure the spectrum of the low-lying, half-integer spin, bound states composed of two fundamental and one antisymmetric hyperquarks, dubbed chimera baryons, in the quenched approximation.In this first systematic, non-perturbative study, we focus on the three lightest parity-even chimera- baryon states, in analogy with QCD, denoted as Λ(CB), Σ(CB) (both with spin 1/2), and Σ(CB)* (with spin 3/2). The spin-1/2 such states are candidates of the top partners. The extrapolation of our results to the continuum and massless-hyperquark limit is performed using formulae inspired by QCD heavy-baryon Wilson chiral perturbation theory. Within the range of hyperquark masses in our simulations, we find that Σ(CB) is not heavier than Λ(CB).
published_date 2024-05-23T16:46:36Z
_version_ 1800311874900721664
score 11.037603

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