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New constraints on neutralino dark matter in the supersymmetric standard model

We investigate the prospects for neutralino dark matter within the Supersymmetric Standard Model (SSM) including the constraints from universal soft supersymmetry breaking and radiative breaking of the electroweak symmetry. The latter is enforced by using the one-loop Higgs effective potential which...

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Autores principales: Kelley, S., Lopez, Jorge L., Nanopoulos, Dimitri V., Pois, H., Yuan, Ka-jia
Lenguaje:eng
Publicado: 1993
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.47.2461
http://cds.cern.ch/record/239232
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author Kelley, S.
Lopez, Jorge L.
Nanopoulos, Dimitri V.
Pois, H.
Yuan, Ka-jia
author_facet Kelley, S.
Lopez, Jorge L.
Nanopoulos, Dimitri V.
Pois, H.
Yuan, Ka-jia
author_sort Kelley, S.
collection CERN
description We investigate the prospects for neutralino dark matter within the Supersymmetric Standard Model (SSM) including the constraints from universal soft supersymmetry breaking and radiative breaking of the electroweak symmetry. The latter is enforced by using the one-loop Higgs effective potential which automatically gives the one-loop corrected Higgs boson masses. We perform an exhaustive search of the allowed five-dimensional parameter space and find that the neutralino relic abundance $\Omega_\chi h^2_0$ depends most strongly on the ratio $\xi_0\equiv m_0/m_{1/2}$. For $\xi_0\gg1$ the relic abundance is almost always much too large, whereas for $\xi_0\ll1$ the opposite occurs. For $\xi_0\sim1$ there are wide ranges of the remaining parameters for which $\Omega_\chi\sim1$. We also determine that $m_{\tilde q}\gsim250\GeV$ and $m_{\tilde l}\gsim100\GeV$ are necessary in order to possibly achieve $\Omega_\chi\sim1$. These lower bounds are much weaker than the corresponding ones derived previously when radiative breaking was {\it not} enforced.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1993
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spelling cern-2392322023-03-14T18:53:14Zdoi:10.1103/PhysRevD.47.2461http://cds.cern.ch/record/239232engKelley, S.Lopez, Jorge L.Nanopoulos, Dimitri V.Pois, H.Yuan, Ka-jiaNew constraints on neutralino dark matter in the supersymmetric standard modelParticle Physics - TheoryWe investigate the prospects for neutralino dark matter within the Supersymmetric Standard Model (SSM) including the constraints from universal soft supersymmetry breaking and radiative breaking of the electroweak symmetry. The latter is enforced by using the one-loop Higgs effective potential which automatically gives the one-loop corrected Higgs boson masses. We perform an exhaustive search of the allowed five-dimensional parameter space and find that the neutralino relic abundance $\Omega_\chi h^2_0$ depends most strongly on the ratio $\xi_0\equiv m_0/m_{1/2}$. For $\xi_0\gg1$ the relic abundance is almost always much too large, whereas for $\xi_0\ll1$ the opposite occurs. For $\xi_0\sim1$ there are wide ranges of the remaining parameters for which $\Omega_\chi\sim1$. We also determine that $m_{\tilde q}\gsim250\GeV$ and $m_{\tilde l}\gsim100\GeV$ are necessary in order to possibly achieve $\Omega_\chi\sim1$. These lower bounds are much weaker than the corresponding ones derived previously when radiative breaking was {\it not} enforced.We investigate the prospects for neutralino dark matter within the Supersymmetric Standard Model (SSM) including the constraints from universal soft supersymmetry breaking and radiative breaking of the electroweak symmetry. The latter is enforced by using the one-loop Higgs effective potential which automatically gives the one-loop corrected Higgs boson masses. We perform an exhaustive search of the allowed five-dimensional parameter space and find that the neutralino relic abundance $\Omega_\chi h^2_0$ depends most strongly on the ratio $\xi_0\equiv m_0/m_{1/2}$. For $\xi_0\gg1$ the relic abundance is almost always much too large, whereas for $\xi_0\ll1$ the opposite occurs. For $\xi_0\sim1$ there are wide ranges of the remaining parameters for which $\Omega_\chi\sim1$. We also determine that $m_{\tilde q}\gsim250\GeV$ and $m_{\tilde l}\gsim100\GeV$ are necessary in order to possibly achieve $\Omega_\chi\sim1$. These lower bounds are much weaker than the corresponding ones derived previously when radiative breaking was {\it not} enforced.hep-ph/9207253CERN-TH-6584-92CTP-TAMU-56-92ACT-16-92UAHEP-9212ACT-1992-16CERN-TH-6584-92CTP-TAMU-92-56UA-HEP-92-12oai:cds.cern.ch:2392321993
spellingShingle Particle Physics - Theory
Kelley, S.
Lopez, Jorge L.
Nanopoulos, Dimitri V.
Pois, H.
Yuan, Ka-jia
New constraints on neutralino dark matter in the supersymmetric standard model
title New constraints on neutralino dark matter in the supersymmetric standard model
title_full New constraints on neutralino dark matter in the supersymmetric standard model
title_fullStr New constraints on neutralino dark matter in the supersymmetric standard model
title_full_unstemmed New constraints on neutralino dark matter in the supersymmetric standard model
title_short New constraints on neutralino dark matter in the supersymmetric standard model
title_sort new constraints on neutralino dark matter in the supersymmetric standard model
topic Particle Physics - Theory
url https://dx.doi.org/10.1103/PhysRevD.47.2461
http://cds.cern.ch/record/239232
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AT nanopoulosdimitriv newconstraintsonneutralinodarkmatterinthesupersymmetricstandardmodel
AT poish newconstraintsonneutralinodarkmatterinthesupersymmetricstandardmodel
AT yuankajia newconstraintsonneutralinodarkmatterinthesupersymmetricstandardmodel