Colliders as a simultaneous probe of supersymmetric dark matter and Terascale cosmology

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Terascale supersymmetry has the potential to provide a natural explanation of the dominant dark matter component of the standard {Lambda}CDM cosmology. However once we impose the constraints on minimal supersymmetry parameters from current particle physics data, a satisfactory dark matter abundance is no longer prima facie natural. This Neutralino Tuning Problem could be a hint of nonstandard cosmology during and/or after the Terascale era. To quantify this possibility, we introduce an alternative cosmological benchmark based upon a simple model of quintessential inflation. This benchmark has no free parameters, so for a given supersymmetry model it allows an unambiguous prediction of ... continued below

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15 pages

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Barenboim, Gabriela; U., /Valencia; Lykken, Joseph D. & /Fermilab August 1, 2006.

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Terascale supersymmetry has the potential to provide a natural explanation of the dominant dark matter component of the standard {Lambda}CDM cosmology. However once we impose the constraints on minimal supersymmetry parameters from current particle physics data, a satisfactory dark matter abundance is no longer prima facie natural. This Neutralino Tuning Problem could be a hint of nonstandard cosmology during and/or after the Terascale era. To quantify this possibility, we introduce an alternative cosmological benchmark based upon a simple model of quintessential inflation. This benchmark has no free parameters, so for a given supersymmetry model it allows an unambiguous prediction of the dark matter relic density. As a example, we scan over the parameter space of the CMSSM, comparing the neutralino relic density predictions with the bounds from WMAP. We find that the WMAP-allowed regions of the CMSSM are an order of magnitude larger if we use the alternative cosmological benchmark, as opposed to {Lambda}CDM. Initial results from the CERN Large Hadron Collider will distinguish between the two allowed regions.

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15 pages

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  • Journal Name: JHEP 0612:005,2006

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  • Report No.: FERMILAB-PUB-06-277-T
  • Grant Number: AC02-07CH11359
  • DOI: 10.1088/1126-6708/2006/12/005 | External Link
  • Office of Scientific & Technical Information Report Number: 897063
  • Archival Resource Key: ark:/67531/metadc890473

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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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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Barenboim, Gabriela; U., /Valencia; Lykken, Joseph D. & /Fermilab. Colliders as a simultaneous probe of supersymmetric dark matter and Terascale cosmology, article, August 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc890473/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.