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Lower Limits on Soft Supersymmetry-Breaking Scalar Masses

Working in the context of the CMSSM, we argue that phenomenological constraints now require the universal soft supersymmetry-breaking scalar mass m_0 be non-zero at the input GUT scale. This conclusion is primarily imposed by the LEP lower limit on the Higgs mass and the requirement that the lightes...

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Autores principales: Ellis, John R., Nanopoulos, Dimitri V., Olive, Keith A.
Lenguaje:eng
Publicado: 2001
Materias:
Acceso en línea:https://dx.doi.org/10.1016/S0370-2693(01)01433-2
http://cds.cern.ch/record/520988
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author Ellis, John R.
Nanopoulos, Dimitri V.
Olive, Keith A.
author_facet Ellis, John R.
Nanopoulos, Dimitri V.
Olive, Keith A.
author_sort Ellis, John R.
collection CERN
description Working in the context of the CMSSM, we argue that phenomenological constraints now require the universal soft supersymmetry-breaking scalar mass m_0 be non-zero at the input GUT scale. This conclusion is primarily imposed by the LEP lower limit on the Higgs mass and the requirement that the lightest supersymmetric particle not be charged. We find that m_0 > 0 for all tan beta if mu < 0, and m_0 = 0 may be allowed for mu > 0 only when tan beta sim 8 and one allows an uncertainty of 3+ GeV in the theoretical calculation of the Higgs mass. Upper limits on flavour-changing neutral interactions in the MSSM squark sector allow substantial violations of non-universality in the m_0 values, even if their magnitudes are comparable to the lower limit we find in the CMSSM. Also, we show that our lower limit on m_0 at the GUT scale in the CMSSM is compatible with the no-scale boundary condition m_0 = 0 at the Planck scale.
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spelling cern-5209882023-03-14T18:02:19Zdoi:10.1016/S0370-2693(01)01433-2http://cds.cern.ch/record/520988engEllis, John R.Nanopoulos, Dimitri V.Olive, Keith A.Lower Limits on Soft Supersymmetry-Breaking Scalar MassesParticle Physics - PhenomenologyWorking in the context of the CMSSM, we argue that phenomenological constraints now require the universal soft supersymmetry-breaking scalar mass m_0 be non-zero at the input GUT scale. This conclusion is primarily imposed by the LEP lower limit on the Higgs mass and the requirement that the lightest supersymmetric particle not be charged. We find that m_0 > 0 for all tan beta if mu < 0, and m_0 = 0 may be allowed for mu > 0 only when tan beta sim 8 and one allows an uncertainty of 3+ GeV in the theoretical calculation of the Higgs mass. Upper limits on flavour-changing neutral interactions in the MSSM squark sector allow substantial violations of non-universality in the m_0 values, even if their magnitudes are comparable to the lower limit we find in the CMSSM. Also, we show that our lower limit on m_0 at the GUT scale in the CMSSM is compatible with the no-scale boundary condition m_0 = 0 at the Planck scale.Working in the context of the CMSSM, we argue that phenomenological constraints now require the universal soft supersymmetry-breaking scalar mass m 0 be non-zero at the input GUT scale. This conclusion is primarily imposed by the LEP lower limit on the Higgs mass and the requirement that the lightest supersymmetric particle not be charged. We find that m 0 >0 for all tan β if μ <0, and m 0 =0 may be allowed for μ >0 only when tan β ∼8 and one allows an uncertainty of 3+ GeV in the theoretical calculation of the Higgs mass. Upper limits on flavour-changing neutral interactions in the MSSM squark sector allow substantial violations of non-universality in the m 0 values, even if their magnitudes are comparable to the lower limit we find in the CMSSM. Also, we show that our lower limit on m 0 at the GUT scale in the CMSSM is compatible with the no-scale boundary condition m 0 =0 at the Planck scale.Working in the context of the CMSSM, we argue that phenomenological constraints now require the universal soft supersymmetry-breaking scalar mass m_0 be non-zero at the input GUT scale. This conclusion is primarily imposed by the LEP lower limit on the Higgs mass and the requirement that the lightest supersymmetric particle not be charged. We find that m_0 > 0 for all tan beta if mu < 0, and m_0 = 0 may be allowed for mu > 0 only when tan beta sim 8 and one allows an uncertainty of 3+ GeV in the theoretical calculation of the Higgs mass. Upper limits on flavour-changing neutral interactions in the MSSM squark sector allow substantial violations of non-universality in the m_0 values, even if their magnitudes are comparable to the lower limit we find in the CMSSM. Also, we show that our lower limit on m_0 at the GUT scale in the CMSSM is compatible with the no-scale boundary condition m_0 = 0 at the Planck scale.hep-ph/0109288UMN-TH-2025-01TPI-MINN-01-43CERN-TH-2001-256ACT-09-01CTP-TAMU-29-01ACT-2001-09CERN-TH-2001-256TPI-MINN-2001-43UMN-TH-2025oai:cds.cern.ch:5209882001-09-28
spellingShingle Particle Physics - Phenomenology
Ellis, John R.
Nanopoulos, Dimitri V.
Olive, Keith A.
Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title_full Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title_fullStr Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title_full_unstemmed Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title_short Lower Limits on Soft Supersymmetry-Breaking Scalar Masses
title_sort lower limits on soft supersymmetry-breaking scalar masses
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/S0370-2693(01)01433-2
http://cds.cern.ch/record/520988
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