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Exclusion of Canonical Weakly Interacting Massive Particles by Joint Analysis of Milky Way Dwarf Galaxies with Data from the Fermi Gamma-Ray Space Telescope
Open accessAbstract
Dwarf spheroidal galaxies are known to be excellent targets for the detection of annihilating dark matter. We present new limits on the annihilation cross section of weakly interacting massive particles based on the joint analysis of seven Milky Way dwarfs using a frequentist Neyman construction and Pass 7 data from the Fermi Gamma-Ray Space Telescope. We exclude generic weakly interacting massive particle candidates annihilating into bb with a mass less than 40 GeV that reproduce the observed relic abundance. To within 95% systematic errors on the dark matter distribution within the dwarfs, the mass lower limit can be as low as 19 GeV or as high as 240 GeV. For annihilation into τ+ τ-, these limits become 19, 13, and 80 GeV, respectively.
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Cites
Outline of a Theory of Statistical Estimation Based on the Classical Theory of Probability
Neyman, J. (1937) · Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences · doi:10.1098/rsta.1937.0005 · Cited by 1,087
Cited by
Ackermann, M., Albert, A., Anderson, B., Atwood, W. B., Baldini, L., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., Bissaldi, E., et al. (2015) · Physical Review Letters · doi:10.1103/physrevlett.115.231301 · Cited by 1,116
Precise relic WIMP abundance and its impact on searches for dark matter annihilation
Steigman, G., Dasgupta, B., & Beacom, J. F. (2012) · Physical Review D · doi:10.1103/physrevd.86.023506 · Cited by 743
Update on scalar singlet dark matter
Cline, J. M., Scott, P., Kainulainen, K., & Weniger, C. (2013) · Physical Review D · doi:10.1103/physrevd.88.055025 · Cited by 580
Ackermann, M., Ajello, M., Albert, A., Atwood, W. B., Baldini, L., Ballet, J., Barbiellini, G., Bastieri, D., Bechtol, K., Bellazzini, R., et al. (2011) · Physical Review Letters · doi:10.1103/physrevlett.107.241302 · Cited by 566
Background model systematics for the Fermi GeV excess
Calore, F., Cholis, I., & Weniger, C. (2015) · Journal of Cosmology and Astroparticle Physics · doi:10.1088/1475-7516/2015/03/038 · Cited by 461
Metadata
- Authors
- Geringer-Sameth, A., & Koushiappas, S. M.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2011-12-08
- Volume
- 107
- Issue
- 24
- Pages
- 241303-241303
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1932016673
- Cited by
- 305
- References
- 1
- FWCI
- 28.65
- Type
- journal article
- Language
- en
- Open access
- green
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- Geringer-Sameth, A., & Koushiappas, S. M. (2011). Exclusion of Canonical Weakly Interacting Massive Particles by Joint Analysis of Milky Way Dwarf Galaxies with Data from the Fermi Gamma-Ray Space Telescope. Physical Review Letters. https://doi.org/10.1103/physrevlett.107.241303
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