Large mass hierarchies from strongly-coupled dynamics

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

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Large mass hierarchies from strongly-coupled dynamics

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

Proceedings of the 34th annual International Symposium on Lattice Field Theory (LATTICE2016)

Swansea University Author: Ed Bennett

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Abstract

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

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Published in:	Proceedings of the 34th annual International Symposium on Lattice Field Theory (LATTICE2016)
ISSN:	1824-8039
Published:	2017
Online Access:	Check full text
URI:	https://cronfa.swan.ac.uk/Record/cronfa32043
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first_indexed	2017-03-16T19:53:15Z
last_indexed	2018-02-09T05:19:33Z
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spelling	2017-07-19T16:53:12.5574311 v2 32043 2017-02-22 Large mass hierarchies from strongly-coupled dynamics e1a8e7927d2b093acdc54e74eac95e38 0000-0002-1678-6701 Ed Bennett Ed Bennett true false 2017-02-22 SMA Motivated by the absence of signals of new physics at the LHC, which seems to imply the presence of large mass hierarchies, we investigate the theoretical possibility that these could arise dynamically in 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-)conformal regime---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 and spin-0 resonances, and draw comparisons with a simple toy model in the context of gauge/gravity dualities. For models in which large anomalous dimensions arise dynamically, we show indications that this mass ratio can be large, with R>5. Moreover, our results suggest that R might be related to universal properties of the IR fixed point. Our findings provide an interesting step towards understanding large mass ratios in the non-perturbative regime of quantum field theories with (near) IR conformal behaviour. Conference Paper/Proceeding/Abstract Proceedings of the 34th annual International Symposium on Lattice Field Theory (LATTICE2016) 1824-8039 lattice gauge theory, beyond the standard-model, su(2), near-conformal 16 2 2017 2017-02-16 https://pos.sissa.it/archive/conferences/256/232/LATTICE2016_232.pdf Proceedings of Science works are released under the Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license. COLLEGE NANME Mathematics COLLEGE CODE SMA Swansea University 2017-07-19T16:53:12.5574311 2017-02-22T16:10:11.5320245 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Andreas Athenodorou 1 Georg Bergner 2 Daniel Elander 3 C.-J. David Lin 4 Biagio Lucini 5 Maurizio Piai 6 Ed Bennett 0000-0002-1678-6701 7 0032043-22022017161117.pdf LATTICE2016_232.pdf 2017-02-22T16:11:17.3970000 Output 380304 application/pdf Version of Record true 2017-02-16T00:00:00.0000000 Proceedings of Science works are released under the Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) license. true eng
title	Large mass hierarchies from strongly-coupled dynamics
spellingShingle	Large mass hierarchies from strongly-coupled dynamics Ed Bennett
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	e1a8e7927d2b093acdc54e74eac95e38
author_id_fullname_str_mv	e1a8e7927d2b093acdc54e74eac95e38_***_Ed Bennett
author	Ed Bennett
author2	Andreas Athenodorou Georg Bergner Daniel Elander C.-J. David Lin Biagio Lucini Maurizio Piai Ed Bennett
format	Conference Paper/Proceeding/Abstract
container_title	Proceedings of the 34th annual International Symposium on Lattice Field Theory (LATTICE2016)
publishDate	2017
institution	Swansea University
issn	1824-8039
college_str	Faculty of Science and Engineering
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department_str	School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
url	https://pos.sissa.it/archive/conferences/256/232/LATTICE2016_232.pdf
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 presence of large mass hierarchies, we investigate the theoretical possibility that these could arise dynamically in 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-)conformal regime---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 and spin-0 resonances, and draw comparisons with a simple toy model in the context of gauge/gravity dualities. For models in which large anomalous dimensions arise dynamically, we show indications that this mass ratio can be large, with R>5. Moreover, our results suggest that R might be related to universal properties of the IR fixed point. Our findings provide an interesting step towards understanding large mass ratios in the non-perturbative regime of quantum field theories with (near) IR conformal behaviour.
published_date	2017-02-16T03:39:12Z
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Large mass hierarchies from strongly-coupled dynamics

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