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Minimal Models for Dark Matter and the Muon g-2 Anomaly

We construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the general structure of models without new Higgs...

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Detalles Bibliográficos
Autores principales: Calibbi, Lorenzo, Ziegler, Robert, Zupan, Jure
Lenguaje:eng
Publicado: 2018
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP07(2018)046
http://cds.cern.ch/record/2311228
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author Calibbi, Lorenzo
Ziegler, Robert
Zupan, Jure
author_facet Calibbi, Lorenzo
Ziegler, Robert
Zupan, Jure
author_sort Calibbi, Lorenzo
collection CERN
description We construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the general structure of models without new Higgs couplings, we provide analytical expressions that only depend on the SU(2)$_{L}$ representation. These results allow to demonstrate that only few models in this class can simultaneously explain (g − 2)$_{μ}$ and account for the relic abundance. The experimental constraints and perturbativity considerations exclude all such models, apart from a few fine-tuned regions in the parameter space, with new states in the few 100 GeV range. In the models with new Higgs couplings, the new states can be parametrically heavier by a factor $ \sqrt{1/{y}_{\mu }} $ , with y$_{μ}$ the muon Yukawa coupling, resulting in masses for the new states in the TeV regime. At present these models are not well constrained experimentally, which we illustrate on two representative examples.
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spelling cern-23112282023-10-04T08:13:51Zdoi:10.1007/JHEP07(2018)046http://cds.cern.ch/record/2311228engCalibbi, LorenzoZiegler, RobertZupan, JureMinimal Models for Dark Matter and the Muon g-2 Anomalyhep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyWe construct models with minimal field content that can simultaneously explain the muon g − 2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the general structure of models without new Higgs couplings, we provide analytical expressions that only depend on the SU(2)$_{L}$ representation. These results allow to demonstrate that only few models in this class can simultaneously explain (g − 2)$_{μ}$ and account for the relic abundance. The experimental constraints and perturbativity considerations exclude all such models, apart from a few fine-tuned regions in the parameter space, with new states in the few 100 GeV range. In the models with new Higgs couplings, the new states can be parametrically heavier by a factor $ \sqrt{1/{y}_{\mu }} $ , with y$_{μ}$ the muon Yukawa coupling, resulting in masses for the new states in the TeV regime. At present these models are not well constrained experimentally, which we illustrate on two representative examples.We construct models with minimal field content that can simultaneously explain the muon g-2 anomaly and give the correct dark matter relic abundance. These models fall into two general classes, whether or not the new fields couple to the Higgs. For the general structure of models without new Higgs couplings, we provide analytical expressions that only depend on the $SU(2)_L$ representation. These results allow to demonstrate that only few models in this class can simultaneously explain $(g-2)_\mu$ and account for the relic abundance. The experimental constraints and perturbativity considerations exclude all such models, apart from a few fine-tuned regions in the parameter space, with new states in the few 100 GeV range. In the models with new Higgs couplings, the new states can be parametrically heavier by a factor $\sqrt{1/y_\mu}$, with $y_\mu$ the muon Yukawa coupling, resulting in masses for the new states in the TeV regime. At present these models are not well constrained experimentally, which we illustrate on two representative examples.arXiv:1804.00009CERN-TH-2018-068oai:cds.cern.ch:23112282018-03-30
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Calibbi, Lorenzo
Ziegler, Robert
Zupan, Jure
Minimal Models for Dark Matter and the Muon g-2 Anomaly
title Minimal Models for Dark Matter and the Muon g-2 Anomaly
title_full Minimal Models for Dark Matter and the Muon g-2 Anomaly
title_fullStr Minimal Models for Dark Matter and the Muon g-2 Anomaly
title_full_unstemmed Minimal Models for Dark Matter and the Muon g-2 Anomaly
title_short Minimal Models for Dark Matter and the Muon g-2 Anomaly
title_sort minimal models for dark matter and the muon g-2 anomaly
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP07(2018)046
http://cds.cern.ch/record/2311228
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AT zieglerrobert minimalmodelsfordarkmatterandthemuong2anomaly
AT zupanjure minimalmodelsfordarkmatterandthemuong2anomaly