Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope

Ackermann, M.; Albert, A.; Anderson, B.; Baldini, Luca; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Bissaldi, E.; Bloom, E. D.; Bonamente, E.; Bouvier, A.; Brandt, T. J.; Bregeon, J.; Brigida, M.; Bruel, Pascal; Buehler, R.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caragiulo, M.; Caraveo, P. A.; Cecchi, C.; Charles, E.; Chekhtman, A.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen‐Tanugi, J.; Conrad, J.; D’Ammando, F.; Angelis, A. De; Dermer, C. D.; Digel, S. W.; Silva, E. do Couto e; Drell, P. S.; Drlica-Wagner, A.; Essig, Rouven; Favuzzi, C.; Ferrara, E. C.; Franckowiak, A.; Fukazawa, Yasushi; Funk, Sebastian; Fusco, P.; Gargano, F.; Gasparrini, D.; Giglietto, N.; Giroletti, M.; Godfrey, G.; Gomez-Vargas, G. A.; Grenier, I. A.; Guiriec, S.; Gustafsson, M.; Hayashida, M.; Hays, E.; Hewitt, J. W.; Hughes, R. E.; Jogler, T.; Kamae, T.; Knödlseder, J.; Kocevski, D.; Kuss, M.; Larsson, Susanna C.; Latronico, L.; Garde, M. Llena; Longo, F.; Loparco, F.; Lovellette, M. N.; Lubrano, P.; Martinez, Gregory D.; Mayer, M.; Mazziotta, M. N.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, T.; Моисеев, А. А.; Monzani, M. E.; Morselli, A.; Москаленко, И. В.; Murgia, S.; Nemmen, R.; Nuss, E.; Ohsugi, T.; Orlando, E.; Ormes, J. F.; Perkins, J. S.; Piron, F.; Pivato, G.; Porter, T. A.; Rainò, S.; Rando, R.; Razzano, M.; Razzaque, S.; Reimer, A.; Reimer, O.; Ritz, S.; Sánchez‐Conde, Miguel A.; Sehgal, Neelima; Sgrò, C.; Siskind, E. J.; Spinelli, P.; Strigari, Louis E.; Suson, D. J.; Tajima, H.; Takahashi, H.; Thayer, J. B.; Tibaldo, L.; Tinivella, M.; Torres, D. F.; Uchiyama, Y.; Usher, T.; Vandenbroucke, J.; Vianello, G.; Vitale, V.; Werner, M. W.; Winer, B. L.; Wood, K. S.; Wood, M.; Zaharijaš, Gabrijela; Zimmer, S.

doi:10.1103/physrevd.89.042001

Cited by 446 publications

(521 citation statements)

References 82 publications

(139 reference statements)

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“…Annihilation Figure 13 shows our σ ann v upper limits from DM annihilation into the bb, µ + µ − , τ + τ − and W + W − channels 3 , compared with the corresponding constraints from i) joint analysis of 4 years of observations of 15 dSphs by Fermi -LAT [25]; ii) 112 hours of the GC Halo observations with H.E.S.S. (assuming generic qq final state, [47]); and iii) ∼48 hours of the Segue 1 observations with VERITAS [24].…”

Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 99%

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Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Aleksić

2016

Springer Theses

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Abstract. We present the results of stereoscopic observations of the satellite galaxy Segue 1 with the MAGIC Telescopes, carried out between 2011 and 2013. With almost 160 hours of good-quality data, this is the deepest observational campaign on any dwarf galaxy performed so far in the very high energy range of the electromagnetic spectrum. We search this large data sample for signals of dark matter particles in the mass range between 100 GeV and 20 TeV. For this we use the full likelihood analysis method, which provides optimal sensitivity to characteristic gamma-ray spectral features, like those expected from dark matter annihilation or decay. In particular, we focus our search on gamma-rays produced from different final state Standard Model particles, annihilation with internal bremsstrahlung, monochromatic lines and box-shaped signals. Our results represent the most stringent constraints to the annihilation cross-section or decay lifetime obtained from observations of satellite galaxies, for masses above few hundred GeV. In particular, our strongest limit (95% confidence level) corresponds to a ∼500 GeV dark matter particle annihilating into τ + τ − , and is of order σ ann v ≃ 1.2×10 −24 cm 3 s −1 -a factor ∼40 above the σ ann v thermal value.

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Section: Secondary Photons From Final State Standard Model Particlesmentioning

confidence: 99%

“…Over the last decade, a number of dSphs have been observed by the present generation of IACTs: MAGIC [17][18][19], H.E.S.S. [20][21][22] and VERITAS [23,24], as well as by the Large Area Telescope (LAT) on board the Fermi satellite [25].…”

Section: Introductionmentioning

confidence: 99%

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Aleksić

2016

Springer Theses

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“…The strongest constraints for light DM 9 annihilating into bb or τ + τ − is provided by the measurements of the gamma-ray flux from Dwarf Spheroidal Galaxies by the Fermi-LAT satellite, ruling out the canonical crosssection [41,42]:…”

Section: Jhep11(2014)016mentioning

confidence: 99%

Dark matter with two inert doublets plus one Higgs doublet

Keus

King

Moretti

et al. 2014

J. High Energ. Phys.

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Following the discovery of a Higgs boson, there has been renewed interest in the general 2-Higgs-Doublet Model (2HDM). A model with One Inert Doublet plus One Higgs Doublet (I(1+1)HDM), where one of the scalar doublets is "inert" (since it has no vacuum expectation value and does not couple to fermions) has an advantage over the 2HDM since it provides a good Dark Matter (DM) candidate, namely the lightest inert scalar. Motivated by the existence of three fermion families, here we consider a model with two scalar doublets plus one Higgs doublet (I(2+1)HDM), where the two scalar doublets are inert. The I(2+1)HDM has a richer phenomenology than either the I(1+1)HDM or the 2HDM. We discuss the new regions of DM relic density in the I(2+1)HDM with simplified couplings and address the possibility of constraining the model using recent results from the Large Hadron Collider (LHC) and DM direct detection experiments.

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“…Under the assumption of a particular DM density distribution profile, the flux upper limits can be used to set upper bounds on σ A v . Dwarf spheroidal galaxies have the advantage that the integrated J-factor is relatively insensitive to the choice of a DM density profile [31,32]. The bounds on the annihilation cross sections of χ are obtained from the recent results of Fermi-LAT [26] where the negative search of gamma rays coming from 15 dwarf spheroidal satellite galaxies of the Milky Way is used to set upper limits on the DM annihilation cross section into certain channels, namely e + e − , µ + µ − , τ + τ − , uu, bb and W W .…”

Section: Experimental Inputmentioning

confidence: 99%

Singlet-Doublet model: dark matter searches and LHC constraints

Calibbi

Mariotti

Tziveloglou

2015

J. High Energ. Phys.

100

125

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Abstract:The Singlet-Doublet model of dark matter is a minimal extension of the Standard Model with dark matter that is a mixture of a singlet and a non-chiral pair of electroweak doublet fermions. The stability of dark matter is ensured by the typical parity symmetry, and, similar to a 'Bino-Higgsino' system, the extra matter content improves gauge coupling unification. We revisit the experimental constraints on the Singlet-Doublet dark matter model, combining the most relevant bounds from direct (spin independent and spin dependent) and indirect searches. We show that such comprehensive analysis sets strong constraints on a large part of the 4-dimensional parameter space, closing the notorious 'blind-spots' of spin independent direct searches. Our results emphasise the complementarity of direct and indirect searches in probing dark matter models in diverse mass scale regimes. We also discuss the LHC bounds on such scenario, which play a relevant role in the low mass region of the dark matter candidate.

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Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope

Cited by 446 publications

References 82 publications

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Optimized Dark Matter Searches in Deep Observations of Segue 1 with MAGIC

Dark matter with two inert doublets plus one Higgs doublet

Singlet-Doublet model: dark matter searches and LHC constraints

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