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Doubling Up on Supersymmetry in the Higgs Sector

We explore the possibility that physics at the TeV scale possesses approximate $N = 2$ supersymmetry, which is reduced to the $N=1$ minimal supersymmetric extension of the Standard Model (MSSM) at the electroweak scale. This doubling of supersymmetry modifies the Higgs sector of the theory, with con...

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Detalles Bibliográficos
Autores principales: Ellis, John, Quevillon, Jérémie, Sanz, Verónica
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP10(2016)086
http://cds.cern.ch/record/2200535
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author Ellis, John
Quevillon, Jérémie
Sanz, Verónica
author_facet Ellis, John
Quevillon, Jérémie
Sanz, Verónica
author_sort Ellis, John
collection CERN
description We explore the possibility that physics at the TeV scale possesses approximate $N = 2$ supersymmetry, which is reduced to the $N=1$ minimal supersymmetric extension of the Standard Model (MSSM) at the electroweak scale. This doubling of supersymmetry modifies the Higgs sector of the theory, with consequences for the masses, mixings and couplings of the MSSM Higgs bosons, whose phenomenological consequences we explore in this paper. The mass of the lightest neutral Higgs boson $h$ is independent of $\tan \beta$ at the tree level, and the decoupling limit is realized whatever the values of the heavy Higgs boson masses. Radiative corrections to the top quark and stop squarks dominate over those due to particles in $N=2$ gauge multiplets. We assume that these radiative corrections fix $m_h \simeq 125$ GeV, whatever the masses of the other neutral Higgs bosons $H, A$, a scenario that we term the $h$2MSSM. Since the $H, A$ bosons decouple from the $W$ and $Z$ bosons in the $h$2MSSM at tree level, only the LHC constraints on $H, A$ and $H^\pm$ couplings to fermions are applicable. These and the indirect constraints from LHC measurements of $h$ couplings are consistent with $m_A \gtrsim 200$ GeV for $\tan \beta \in (2, 8)$ in the $h$2MSSM.
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spelling cern-22005352022-08-10T12:51:49Zdoi:10.1007/JHEP10(2016)086http://cds.cern.ch/record/2200535engEllis, JohnQuevillon, JérémieSanz, VerónicaDoubling Up on Supersymmetry in the Higgs SectorParticle Physics - PhenomenologyWe explore the possibility that physics at the TeV scale possesses approximate $N = 2$ supersymmetry, which is reduced to the $N=1$ minimal supersymmetric extension of the Standard Model (MSSM) at the electroweak scale. This doubling of supersymmetry modifies the Higgs sector of the theory, with consequences for the masses, mixings and couplings of the MSSM Higgs bosons, whose phenomenological consequences we explore in this paper. The mass of the lightest neutral Higgs boson $h$ is independent of $\tan \beta$ at the tree level, and the decoupling limit is realized whatever the values of the heavy Higgs boson masses. Radiative corrections to the top quark and stop squarks dominate over those due to particles in $N=2$ gauge multiplets. We assume that these radiative corrections fix $m_h \simeq 125$ GeV, whatever the masses of the other neutral Higgs bosons $H, A$, a scenario that we term the $h$2MSSM. Since the $H, A$ bosons decouple from the $W$ and $Z$ bosons in the $h$2MSSM at tree level, only the LHC constraints on $H, A$ and $H^\pm$ couplings to fermions are applicable. These and the indirect constraints from LHC measurements of $h$ couplings are consistent with $m_A \gtrsim 200$ GeV for $\tan \beta \in (2, 8)$ in the $h$2MSSM.We explore the possibility that physics at the TeV scale possesses approximate N =2 supersymmetry, which is reduced to the N =1 minimal supersymmetric extension of the Standard Model (MSSM) at the electroweak scale. This doubling of supersymmetry modifies the Higgs sector of the theory, with consequences for the masses, mixings and couplings of the MSSM Higgs bosons, whose phenomenological consequences we explore in this paper. The mass of the lightest neutral Higgs boson h is independent of tan β at the tree level, and the decoupling limit is realized whatever the values of the heavy Higgs boson masses. Radiative corrections to the top quark and stop squarks dominate over those due to particles in N = 2 gauge multiplets. We assume that these radiative corrections fix m$_{h}$ ≃ 125 GeV, whatever the masses of the other neutral Higgs bosons H, A, a scenario that we term the h2MSSM. Since the H, A bosons decouple from the W and Z bosons in the h2MSSM at tree level, only the LHC constraints on H, A and H$^{±}$ couplings to fermions are applicable. These and the indirect constraints from LHC measurements of h couplings are consistent with m$_{A}$ ≳ 200 GeV for tan β ∈ (2, 8) in the h2MSSM.We explore the possibility that physics at the TeV scale possesses approximate $N = 2$ supersymmetry, which is reduced to the $N=1$ minimal supersymmetric extension of the Standard Model (MSSM) at the electroweak scale. This doubling of supersymmetry modifies the Higgs sector of the theory, with consequences for the masses, mixings and couplings of the MSSM Higgs bosons, whose phenomenological consequences we explore in this paper. The mass of the lightest neutral Higgs boson $h$ is independent of $\tan \beta$ at the tree level, and the decoupling limit is realized whatever the values of the heavy Higgs boson masses. Radiative corrections to the top quark and stop squarks dominate over those due to particles in $N=2$ gauge multiplets. We assume that these radiative corrections fix $m_h \simeq 125$ GeV, whatever the masses of the other neutral Higgs bosons $H, A$, a scenario that we term the $h$2MSSM. Since the $H, A$ bosons decouple from the $W$ and $Z$ bosons in the $h$2MSSM at tree level, only the LHC constraints on $H, A$ and $H^\pm$ couplings to fermions are applicable. These and the indirect constraints from LHC measurements of $h$ couplings are consistent with $m_A \gtrsim 200$ GeV for $\tan \beta \in (2, 8)$ in the $h$2MSSM.arXiv:1607.05541KCL-PH-TH-2016-42CERN-TH-2016-164KCL-PH-TH-2016-42CERN-TH-2016-164oai:cds.cern.ch:22005352016-07-19
spellingShingle Particle Physics - Phenomenology
Ellis, John
Quevillon, Jérémie
Sanz, Verónica
Doubling Up on Supersymmetry in the Higgs Sector
title Doubling Up on Supersymmetry in the Higgs Sector
title_full Doubling Up on Supersymmetry in the Higgs Sector
title_fullStr Doubling Up on Supersymmetry in the Higgs Sector
title_full_unstemmed Doubling Up on Supersymmetry in the Higgs Sector
title_short Doubling Up on Supersymmetry in the Higgs Sector
title_sort doubling up on supersymmetry in the higgs sector
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP10(2016)086
http://cds.cern.ch/record/2200535
work_keys_str_mv AT ellisjohn doublinguponsupersymmetryinthehiggssector
AT quevillonjeremie doublinguponsupersymmetryinthehiggssector
AT sanzveronica doublinguponsupersymmetryinthehiggssector