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Walking technicolor in light of Z′ searches at the LHC

Walking technicolor in light of Z′ searches at the LHC
Walking technicolor in light of Z′ searches at the LHC

We investigate the potential of the Large Hadron Collider (LHC) to probe one of the most compelling beyond the Standard Model frameworks - walking technicolor (WTC), involving strong dynamics and having a slowly running (walking) new strong coupling. For this purpose we use recent LHC Run 2 data to explore the full parameter space of the minimal WTC model using dilepton signatures from heavy neutral Z′ and Z′′ resonances predicted by the model. This signature is the most promising one for discovery of WTC at the LHC for the low-intermediate values of the g coupling - one of the principle parameters of WTC. We have demonstrated complementarity of the dilepton signals from both resonances, established the most up-to-date limit on the WTC parameter space, and provided projections for the LHC potential to probe the WTC parameter space at higher future luminosities and upgraded energy. We have explored the whole four-dimensional parameter space of the model and have found the most conservative limit on the WTC scale MA above 3 TeV for the low values of g, which is significantly higher than previous limits established by the LHC collaborations.

2470-0010
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Coupe, Azaria
abe2d676-f19c-4a8c-a323-ab51c3b95940
Frandsen, Mads
e400a4a6-0156-4f13-99d9-d4cf38bbd561
Olaiya, Emmanuel
154f58e0-ab04-4f19-96d6-b788955a9ce7
Shepherd-Themistocleous, Claire
a29b4897-1b61-4774-8df7-0f507d905d81
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Coupe, Azaria
abe2d676-f19c-4a8c-a323-ab51c3b95940
Frandsen, Mads
e400a4a6-0156-4f13-99d9-d4cf38bbd561
Olaiya, Emmanuel
154f58e0-ab04-4f19-96d6-b788955a9ce7
Shepherd-Themistocleous, Claire
a29b4897-1b61-4774-8df7-0f507d905d81

Belyaev, Alexander, Coupe, Azaria, Frandsen, Mads, Olaiya, Emmanuel and Shepherd-Themistocleous, Claire (2019) Walking technicolor in light of Z′ searches at the LHC. Physical Review D, 99 (5), [055004]. (doi:10.1103/PhysRevD.99.055004).

Record type: Article

Abstract

We investigate the potential of the Large Hadron Collider (LHC) to probe one of the most compelling beyond the Standard Model frameworks - walking technicolor (WTC), involving strong dynamics and having a slowly running (walking) new strong coupling. For this purpose we use recent LHC Run 2 data to explore the full parameter space of the minimal WTC model using dilepton signatures from heavy neutral Z′ and Z′′ resonances predicted by the model. This signature is the most promising one for discovery of WTC at the LHC for the low-intermediate values of the g coupling - one of the principle parameters of WTC. We have demonstrated complementarity of the dilepton signals from both resonances, established the most up-to-date limit on the WTC parameter space, and provided projections for the LHC potential to probe the WTC parameter space at higher future luminosities and upgraded energy. We have explored the whole four-dimensional parameter space of the model and have found the most conservative limit on the WTC scale MA above 3 TeV for the low values of g, which is significantly higher than previous limits established by the LHC collaborations.

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PhysRevD.99.055004 - Version of Record
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e-pub ahead of print date: 8 March 2019

Identifiers

Local EPrints ID: 430668
URI: http://eprints.soton.ac.uk/id/eprint/430668
ISSN: 2470-0010
PURE UUID: 62ab9165-5b4d-4d78-9ab5-a68a61974153
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 08 May 2019 16:30
Last modified: 17 Dec 2019 01:44

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Contributors

Author: Azaria Coupe
Author: Mads Frandsen
Author: Emmanuel Olaiya
Author: Claire Shepherd-Themistocleous

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