Cascade events at IceCube + DeepCore as a definitive constraint on the dark matter interpretation of the PAMELA and Fermi anomalies

Mandal, Sourav K.; Buckley, Matthew R.; Freese, Katherine; Spolyar, Douglas; Murayama, Hitoshi

doi:10.1103/physrevd.81.043508

Cited by 32 publications

(26 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is likely that a reanalysis of the Super-K data, including large regions around the Galactic Center, may provide a conclusive test of these models (or, alternatively, an analysis of future Icecube+DeepCore data [61]. )…”

Section: Resultsmentioning

confidence: 99%

Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi

Cirelli¹,

Panci²,

Serpico³

2010

Nuclear Physics B

201

246

View full text Add to dashboard Cite

We consider the diffuse gamma ray data from Fermi first year observations and compare them to the gamma ray fluxes predicted by Dark Matter annihilation or decay (both from prompt emission and from Inverse Compton Scattering), for different observation regions of the sky and a range of Dark Matter masses, annihilation/decay channels and Dark Matter galactic profiles. We find that the data exclude large regions of the Dark Matter parameter space not constrained otherwise and discuss possible directions for future improvements. Also, we further constrain Dark Matter interpretations of the e ± PAMELA/Fermi spectral anomalies, both for the annihilating and the decaying Dark Matter case: under very conservative assumptions, only models producing dominantly µ ± and assuming a cored Dark Matter galactic profile can fit the lepton data with masses around ∼ 2 TeV.

show abstract

Section: Resultsmentioning

confidence: 99%

Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi

Cirelli¹,

Panci²,

Serpico³

2010

Nuclear Physics B

201

246

View full text Add to dashboard Cite

show abstract

“…In our calculations, we choose E th ¼ 50 GeV. We also consider an energy independent IceCube/ DeepCore effective volume, V eff ¼ 0:04 km 3 , for the contained muon events [27,40].…”

Section: A Muonsmentioning

confidence: 99%

“…14. For the detector volume, we use an energy independent IceCube/ DeepCore volume whose value is V eff ¼ 0:02 km 3 for the showers [27,40,44]. The detector threshold is again set to be E th sh ¼ 50 GeV.…”

Section: Hadronic and Electromagnetic Showersmentioning

confidence: 99%

See 1 more Smart Citation

Probing dark matter models with neutrinos from the Galactic center

2010

View full text Add to dashboard Cite

We calculate the contained and upward muon and shower fluxes due to neutrinos produced via dark matter annihilation or decay in the Galactic center. We consider dark matter models in which the dark matter particle is a gravitino, a Kaluza-Klein particle and a particle in leptophilic models. The Navarro-Frenk-White profile for the dark matter density distribution in the Galaxy is used. We incorporate neutrino oscillations by assuming maximal mixing and parametrize our results for muon and shower distributions. The muon and shower event rates and the minimum observation times in order to reach 2$\sigma$ detection significance are evaluated. We illustrate how observation times vary with the cone half angle chosen about the Galactic center, with the result that the optimum angles are about 10$^\circ$ and 50$^\circ$ for the muon events and shower events, respectively. We find that for the annihilating dark matter models such as the leptophilic and Kaluza-Klein models, upward and contained muon as well as showers are promising signals for dark matter detection in just a few years of observation, whereas for decaying dark matter models, the same observation times can only be reached with showers. We also illustrate for each model the parameter space probed with the 2$\sigma$ signal detection in five years. We discuss how the shape of the parameter space probed change with significance and the observation time.Comment: 19 pages, 20 figures, 9 tables. v2: summary table added, minor typos corrected, version accepted for publication in Phys. Rev.

show abstract

“…[2,3], and encompasses the experimental resolution of the neutrino detectors. (We note that future measurement by IceCube+DeepCore will lead to sensitive limits at high energy [61,62].) At low energies E ν 100 MeV, the relevant data come from the diffuse supernova neutrino background (DSNB) search performed by the SK experiment [63].…”

Section: B Decay Into Neutrinosmentioning

confidence: 99%

Lifetime constraints for late dark matter decay

2010

View full text Add to dashboard Cite

We consider a class of late-decaying dark-matter models, in which a dark matter particle decays to a heavy stable daughter of approximately the same mass, together with one or more relativistic particles which carry away only a small fraction of the parent rest mass. Such decays can affect galactic halo structure and evolution, and have been invoked as a remedy to some of the small-scale structure-formation problems of cold dark matter. There are existing stringent limits on the dark matter lifetime if the decays produce photons. By considering examples in which the relativistic decay products instead consist of neutrinos or electron-position pairs, we derive stringent limits on these scenarios for a wide range of dark matter masses. We thus eliminate a sizable portion of the parameter space for these late-decay models if the dominant decay channel involves Standard Model final states.PACS numbers: 95.35.+d, 95.85.Pw, 98.62.Gq, 98.70.Vc

show abstract

Cascade events at IceCube + DeepCore as a definitive constraint on the dark matter interpretation of the PAMELA and Fermi anomalies

Cited by 32 publications

References 103 publications

Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi

Diffuse gamma ray constraints on annihilating or decaying Dark Matter after Fermi

Probing dark matter models with neutrinos from the Galactic center

Lifetime constraints for late dark matter decay

Contact Info

Product

Resources

About