Complementarity of Galactic radio and collider data in constraining WIMP dark matter models

Mambrini, Yann; Tytgat, Michel H. G.; Zaharijaš, Gabrijela; Zaldívar, Bryan

doi:10.1088/1475-7516/2012/11/038

Cited by 32 publications

(35 citation statements)

References 203 publications

(370 reference statements)

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“…Other astrophysical constraints arise from the diffuse gamma ray produced by the dark matter annihilation in the center of Milky Way [55], the galactic halo [56], the dwarf spheroidal galaxies [57][58][59] or the radio observation of nearby galaxies like M31 [60][61][62].…”

Section: Indirect Detection Of Dark Mattermentioning

confidence: 99%

“…Even if the authors of [60][61][62] claimed that their limits "exceed the best up-to-day known constraints from Fermi gamma observations", the dependence on magnetic fields profiles and charged particles propagation in M31 medium brings some uncertainties difficult to evaluate. The same remark is valid for the galactic center study [55] where the region of the sky and the cut made to analyze the data depends strongly on the dark matter halo profile in play to maximize the signal/background ratio.…”

Section: Indirect Detection Of Dark Mattermentioning

confidence: 99%

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Extra U(1), effective operators, anomalies and dark matter

Dudas

Heurtier

Mambrini

et al. 2013

J. High Energ. Phys.

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A general analysis is performed on the dimension-six operators mixing an almost hidden Z to the Standard Model (SM), when the Z communicates with the SM via heavy mediators. These are fermions charged under both Z and the SM, while all SM fermions are neutral under Z . We classify the operators as a function of the gauge anomalies behaviour of mediators and explicitly compute the dimension-six operators coupling Z to gluons, generated at one-loop by chiral but anomaly-free, sets of fermion mediators. We prove that only one operator contribute to the couplings between Z charged matter and on-shell gluons. We then make a complete phenomenological analysis of the scenario where the lightest fermion charged under Z is the dark matter candidate. Combining results from WMAP/PLANCK data, mono-jet searches at LHC, and direct/indirect dark matter detections restrict considerably the allowed parameter space.

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Section: Indirect Detection Of Dark Mattermentioning

confidence: 99%

Section: Indirect Detection Of Dark Mattermentioning

confidence: 99%

Extra U(1), effective operators, anomalies and dark matter

Dudas

Heurtier

Mambrini

et al. 2013

J. High Energ. Phys.

Self Cite

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“…It is already well known that the so-called "Higgs portal" provides a quite simple and attractive framework for DM phenomenology [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Interestingly, Higgs searches offer complementary bounds to direct and indirect DM detection searches on the viable parameter space of such DM models, especially in the low mass region [21][22][23]16,[24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Dark matter within the minimal flavour violation ansatz

Lopez-Honorez

Merlo

2013

Physics Letters B

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Minimal Flavour Violation hypothesis can provide an attractive framework for Dark Matter (DM). We consider scalar DM candidates carrying flavour quantum numbers and whose representation under the flavour group guarantees DM stability. They interact with the Standard Model fields through Higgs portal at renormalisable level and also to quarks through dimension-6 operators. We provide a systematic analysis of the viable parameter space for the DM fields, which are triplet of the flavour group, considering several DM-quark interactions. In this framework, we analyse in which cases the viable parameter space differs from Higgs portal models thanks to the underlying flavour structure. In contrast to minimal Higgs portal scenarios, we find that light DM in the GeV mass range as well as heavier candidates above Higgs resonance could be allowed by colliders, direct and indirect DM detection searches as well as flavour constraints. The large mass regime above m t could even be beyond the reach of future experiments such as Xenon 1T.

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“…[36]. This exclusion, on the other hand, is lifted if inverse Compton scattering, ionization, and bremsstrahlung are also considered as energy loss mechanisms of dark matter annihilation products, altering radio emission [37,68]. As shown by Ref.…”

Section: Resultsmentioning

confidence: 99%

Interpreting the Fermi-LAT gamma ray excess in the simplified framework

Balázs¹,

Li²,

Savage

2015

Phys. Rev. D

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3. The right to use all or part of the Article, including the APS-prepared version without revision or modification, on the author(s)' web home page or employer's website and to make copies of all or part of the Article, including the APS-prepared version without revision or modification, for the author(s)' and/or the employer's use for educational or research purposes." August 2016Interpreting the Fermi-LAT gamma ray excess in the simplified framework We test the plausibility of the hypothesis that the annihilation of a Majorana fermion dark matter particle via a scalar mediator explains the gamma ray excess from the Galactic center. Assuming that the mediator couples to all third generation fermions we calculate observables for dark matter abundance and scattering on nuclei, gamma, positron, and antiproton cosmic ray fluxes, radio emission from dark matter annihilation, and the effect of dark matter annihilations on the CMB. After discarding the controversial radio observation, we show that the dark matter model simultaneously fits the observed excesses in the cosmic gamma ray, the positron, and antiproton fluxes, while evading constraints from the CMB and direct detection. The experimental data are consistent with a dark matter (mediator) mass in the 10-100 (3-1000) GeV region and with weakly correlated couplings to bottom quarks and tau leptons with values of 10 −3 − 1 at the 68% credibility level.

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Complementarity of Galactic radio and collider data in constraining WIMP dark matter models

Cited by 32 publications

References 203 publications

Extra U(1), effective operators, anomalies and dark matter

Extra U(1), effective operators, anomalies and dark matter

Dark matter within the minimal flavour violation ansatz

Interpreting the Fermi-LAT gamma ray excess in the simplified framework

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