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Spectrum-doubled heavy vector bosons at the LHC

Thomas Appelquist, Yang Bai, James Ingoldby, Maurizio Piai Orcid Logo

Journal of High Energy Physics, Volume: 2016, Issue: 1

Swansea University Author: Maurizio Piai Orcid Logo

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DOI (Published version): 10.1007/JHEP01(2016)109

Abstract

We study a simple effective field theory incorporating six heavy vector bosons together with the standard-model field content. The new particles preserve custodial symmetry as well as an approximate left-right parity symmetry. The enhanced symmetry of the model allows it to satisfy precision electro...

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Published in: Journal of High Energy Physics
ISSN: 1029-8479
Published: 2016
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URI: https://cronfa.swan.ac.uk/Record/cronfa24477
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first_indexed 2015-11-19T01:56:16Z
last_indexed 2018-02-09T05:04:17Z
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spelling 2017-08-02T11:56:49.2401000 v2 24477 2015-11-18 Spectrum-doubled heavy vector bosons at the LHC 3ce295f2c7cc318bac7da18f9989d8c3 0000-0002-2251-0111 Maurizio Piai Maurizio Piai true false 2015-11-18 SPH We study a simple effective field theory incorporating six heavy vector bosons together with the standard-model field content. The new particles preserve custodial symmetry as well as an approximate left-right parity symmetry. The enhanced symmetry of the model allows it to satisfy precision electroweak constraints and bounds from Higgs physics in a regime where all the couplings are perturbative and where the amount of fine-tuning is comparable to that in the standard model itself. We find that the model could explain the recently observed excesses in di-boson processes at invariant mass close to 2 TeV from LHC Run 1 for a range of allowed parameter space. The masses of all the particles differ by no more than roughly 10%. In a portion of the allowed parameter space only one of the new particles has a production cross section large enough to be detectable with the energy and luminosity of Run 1, both via its decay to WZ and to Wh, while the others have suppressed production rates. The model can be tested at the higher-energy and higher-luminosity run of the LHC even for an overall scale of the new particles higher than 3 TeV. Journal Article Journal of High Energy Physics 2016 1 1029-8479 31 1 2016 2016-01-31 10.1007/JHEP01(2016)109 http://arxiv.org/pdf/1511.05473.pdf This article is published under a CC-BY licence. COLLEGE NANME Physics COLLEGE CODE SPH Swansea University SCOAP 2017-08-02T11:56:49.2401000 2015-11-18T09:00:21.4590990 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Thomas Appelquist 1 Yang Bai 2 James Ingoldby 3 Maurizio Piai 0000-0002-2251-0111 4 0024477-26052016152849.pdf 1511.05473v2.pdf 2016-05-26T15:28:49.8800000 Output 390547 application/pdf Accepted Manuscript true 2016-05-26T00:00:00.0000000 true
title Spectrum-doubled heavy vector bosons at the LHC
spellingShingle Spectrum-doubled heavy vector bosons at the LHC
Maurizio Piai
title_short Spectrum-doubled heavy vector bosons at the LHC
title_full Spectrum-doubled heavy vector bosons at the LHC
title_fullStr Spectrum-doubled heavy vector bosons at the LHC
title_full_unstemmed Spectrum-doubled heavy vector bosons at the LHC
title_sort Spectrum-doubled heavy vector bosons at the LHC
author_id_str_mv 3ce295f2c7cc318bac7da18f9989d8c3
author_id_fullname_str_mv 3ce295f2c7cc318bac7da18f9989d8c3_***_Maurizio Piai
author Maurizio Piai
author2 Thomas Appelquist
Yang Bai
James Ingoldby
Maurizio Piai
format Journal article
container_title Journal of High Energy Physics
container_volume 2016
container_issue 1
publishDate 2016
institution Swansea University
issn 1029-8479
doi_str_mv 10.1007/JHEP01(2016)109
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
url http://arxiv.org/pdf/1511.05473.pdf
document_store_str 1
active_str 0
description We study a simple effective field theory incorporating six heavy vector bosons together with the standard-model field content. The new particles preserve custodial symmetry as well as an approximate left-right parity symmetry. The enhanced symmetry of the model allows it to satisfy precision electroweak constraints and bounds from Higgs physics in a regime where all the couplings are perturbative and where the amount of fine-tuning is comparable to that in the standard model itself. We find that the model could explain the recently observed excesses in di-boson processes at invariant mass close to 2 TeV from LHC Run 1 for a range of allowed parameter space. The masses of all the particles differ by no more than roughly 10%. In a portion of the allowed parameter space only one of the new particles has a production cross section large enough to be detectable with the energy and luminosity of Run 1, both via its decay to WZ and to Wh, while the others have suppressed production rates. The model can be tested at the higher-energy and higher-luminosity run of the LHC even for an overall scale of the new particles higher than 3 TeV.
published_date 2016-01-31T03:29:02Z
_version_ 1763751118405369856
score 11.013148

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