Collider searches and cosmology in the MSSM with heavy scalars

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In a variety of supersymmetric extensions of the Standard Model, the scalar partners of the quarks and leptons are predicted to be very heavy and beyond the reach of next-generation colliders. For instance, the realization of electroweak baryogenesis in supersymmetry requires new sources of CP-violation, which can only be naturally accommodated with electric dipole moment constraints if the first and second generation scalar fermions are beyond the TeV scale. Also in focus-point supersymmetry and split supersymmetry the scalar fermions are very heavy. In this work, the phenomenology of scenarios with electroweak baryogenesis and in the focus point region at the ... continued below

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30 pages

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Carena, Marcela; /Fermilab; Freitas, A. & U., /Zurich August 1, 2006.

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In a variety of supersymmetric extensions of the Standard Model, the scalar partners of the quarks and leptons are predicted to be very heavy and beyond the reach of next-generation colliders. For instance, the realization of electroweak baryogenesis in supersymmetry requires new sources of CP-violation, which can only be naturally accommodated with electric dipole moment constraints if the first and second generation scalar fermions are beyond the TeV scale. Also in focus-point supersymmetry and split supersymmetry the scalar fermions are very heavy. In this work, the phenomenology of scenarios with electroweak baryogenesis and in the focus point region at the LHC and ILC is studied, which becomes challenging due to the presence of heavy scalar fermions. Implications for the analysis of baryogenesis and dark matter are deduced. It is found that precision measurements of superpartner properties allow an accurate determination of the dark matter relic density in both scenarios, while important but only incomplete information about the baryogenesis mechanism can be obtained.

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30 pages

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  • Journal Name: Phys.Rev.D74:095004,2006

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  • Report No.: FERMILAB-PUB-06-289-T
  • Grant Number: AC02-07CH11359
  • DOI: 10.1103/PhysRevD.74.095004 | External Link
  • Office of Scientific & Technical Information Report Number: 897268
  • Archival Resource Key: ark:/67531/metadc885961

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  • August 1, 2006

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  • Sept. 22, 2016, 2:13 a.m.

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  • Dec. 2, 2016, 10:16 p.m.

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Carena, Marcela; /Fermilab; Freitas, A. & U., /Zurich. Collider searches and cosmology in the MSSM with heavy scalars, article, August 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc885961/: accessed September 26, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.