Large mass hierarchies from strongly-coupled dynamics

Athenodorou, Andreas; Bennett, Ed; Bergner, Georg; Elander, Daniel; Lin, C-J David; Lucini, Biagio; Piai, Maurizio

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Large mass hierarchies from strongly-coupled dynamics

Andreas Athenodorou, Ed Bennett, Georg Bergner, Daniel Elander, C-J David Lin, Biagio Lucini, Maurizio Piai

Pos(Lattice2016)232

Swansea University Author: Maurizio Piai

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Abstract

Motivated by the absence of signals of new physics at the LHC, which seems to imply the presenceof large mass hierarchies, we investigate the theoretical possibility that these could arise dynamicallyin new strongly-coupled gauge theories extending the standard model of particle physics.To this purp...

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Published in:	Pos(Lattice2016)232
ISBN:	1824-8039.
Published:	2017
URI:	https://cronfa.swan.ac.uk/Record/cronfa32041
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first_indexed	2017-02-22T19:38:18Z
last_indexed	2018-02-09T05:19:33Z
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spelling	2017-03-20T10:48:38.3619987 v2 32041 2017-02-22 Large mass hierarchies from strongly-coupled dynamics 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 2017-02-22 SPH Motivated by the absence of signals of new physics at the LHC, which seems to imply the presenceof large mass hierarchies, we investigate the theoretical possibility that these could arise dynamicallyin new strongly-coupled gauge theories extending the standard model of particle physics.To this purpose, we study lattice data on non-Abelian gauge theories in the (near-)conformalregime—specifically, SU(2) with Nf = 1 and 2 dynamical fermion flavours in the adjoint representation.We focus our attention on the ratio R between the masses of the lightest spin-2 andspin-0 resonances, and draw comparisons with a simple toy model in the context of gauge/gravitydualities. For models in which large anomalous dimensions arise dynamically, we show indicationsthat this mass ratio can be large, with R > 5. Moreover, our results suggest that R mightbe related to universal properties of the IR fixed point. Our findings provide an interesting steptowards understanding large mass ratios in the non-perturbative regime of quantum field theorieswith (near) IR conformal behaviour. Conference Paper/Proceeding/Abstract Pos(Lattice2016)232 1824-8039. 15 2 2017 2017-02-15 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2017-03-20T10:48:38.3619987 2017-02-22T15:53:20.9775961 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Andreas Athenodorou 1 Ed Bennett 2 Georg Bergner 3 Daniel Elander 4 C-J David Lin 5 Biagio Lucini 6 Maurizio Piai 0000-0002-2251-0111 7 0032041-02032017094914.pdf 1702.06452.pdf 2017-03-02T09:49:14.7700000 Output 452406 application/pdf Accepted Manuscript true 2017-02-15T00:00:00.0000000 Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. true eng
title	Large mass hierarchies from strongly-coupled dynamics
spellingShingle	Large mass hierarchies from strongly-coupled dynamics Maurizio Piai
title_short	Large mass hierarchies from strongly-coupled dynamics
title_full	Large mass hierarchies from strongly-coupled dynamics
title_fullStr	Large mass hierarchies from strongly-coupled dynamics
title_full_unstemmed	Large mass hierarchies from strongly-coupled dynamics
title_sort	Large mass hierarchies from strongly-coupled dynamics
author_id_str_mv	3ce295f2c7cc318bac7da18f9989d8c3
author_id_fullname_str_mv	3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
author	Maurizio Piai
author2	Andreas Athenodorou Ed Bennett Georg Bergner Daniel Elander C-J David Lin Biagio Lucini Maurizio Piai
format	Conference Paper/Proceeding/Abstract
container_title	Pos(Lattice2016)232
publishDate	2017
institution	Swansea University
isbn	1824-8039.
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
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description	Motivated by the absence of signals of new physics at the LHC, which seems to imply the presenceof large mass hierarchies, we investigate the theoretical possibility that these could arise dynamicallyin new strongly-coupled gauge theories extending the standard model of particle physics.To this purpose, we study lattice data on non-Abelian gauge theories in the (near-)conformalregime—specifically, SU(2) with Nf = 1 and 2 dynamical fermion flavours in the adjoint representation.We focus our attention on the ratio R between the masses of the lightest spin-2 andspin-0 resonances, and draw comparisons with a simple toy model in the context of gauge/gravitydualities. For models in which large anomalous dimensions arise dynamically, we show indicationsthat this mass ratio can be large, with R > 5. Moreover, our results suggest that R mightbe related to universal properties of the IR fixed point. Our findings provide an interesting steptowards understanding large mass ratios in the non-perturbative regime of quantum field theorieswith (near) IR conformal behaviour.
published_date	2017-02-15T03:39:12Z
_version_	1763751757933969408
score	11.013148

Large mass hierarchies from strongly-coupled dynamics

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