Constraints on the pMSSM from LAT Observations of Dwarf Spheroidal Galaxies
| Autor: | Cotta, R. C., Drlica-Wagner, A., Murgia, S., Bloom, E. D., Hewett, J. L., Rizzo, T. G. |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | JCAP 1204 (2012) 016 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1475-7516/2012/04/016 |
| Popis: | We examine the ability for the Large Area Telescope (LAT) to constrain Minimal Supersymmetric Standard Model (MSSM) dark matter through a combined analysis of Milky Way dwarf spheroidal galaxies. We examine the Lightest Supersymmetric Particles (LSPs) for a set of ~71k experimentally valid supersymmetric models derived from the phenomenological-MSSM (pMSSM). We find that none of these models can be excluded at 95% confidence by the current analysis; nevertheless, many lie within the predicted reach of future LAT analyses. With two years of data, we find that the LAT is currently most sensitive to light LSPs (m_LSP < 50 GeV) annihilating into tau-pairs and heavier LSPs annihilating into b-bbar. Additionally, we find that future LAT analyses will be able to probe some LSPs that form a sub-dominant component of dark matter. We directly compare the LAT results to direct detection experiments and show the complementarity of these search methods. Comment: 24 pages, 9 figures, submitted to JCAP |
| Databáze: | arXiv |
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