publication . Article . Preprint . 2017

Probing decaying heavy dark matter with the 4-year IceCube HESE data

Bhattacharya, Atri; Esmaili, Arman; Sergio, Palomares-Ruiz; Sarcevic, Ina;
Open Access
  • Published: 18 Jun 2017 Journal: Journal of Cosmology and Astroparticle Physics, volume 2,017, pages 27-27 (eissn: 1475-7516, Copyright policy)
  • Publisher: IOP Publishing
  • Country: Belgium
Abstract
After the first four years of data taking, the IceCube neutrino telescope has observed 54 high-energy starting events (HESE) with deposited energies between 20 TeV and 2 PeV. The background from atmospheric muons and neutrinos is expected to be of about 20 events, all below 100 TeV, thus pointing towards the astrophysical origin of about 8 events per year in that data set. However, their precise origin remains unknown. Here, we perform a detailed analysis of this event sample (considering simultaneously the energy, hemisphere and topology of the events) by assuming two contributions for the signal events: an isotropic power-law flux and a flux from decaying heav...
Subjects
arXiv: Astrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::Experiment
free text keywords: : Physics [Physical, chemical, mathematical & earth Sciences], : Physique [Physique, chimie, mathématiques & sciences de la terre], Astronomy and Astrophysics, Physics, Neutrino detector, Spectral index, Muon, Flux, Neutrino astronomy, Quark, Particle physics, Neutrino, Dark matter, High Energy Physics - Phenomenology, Astrophysics - High Energy Astrophysical Phenomena, High Energy Physics - Experiment
Funded by
NSF| Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics
Project
  • Funder: National Science Foundation (NSF)
  • Project Code: 1066293
  • Funding stream: Directorate for Mathematical & Physical Sciences | Division of Physics
,
EC| ELUSIVES
Project
ELUSIVES
The Elusives Enterprise: Asymmetries of the Invisible Universe
  • Funder: European Commission (EC)
  • Project Code: 674896
  • Funding stream: H2020 | MSCA-ITN-ETN
,
EC| InvisiblesPlus
Project
InvisiblesPlus
InvisiblesPlus
  • Funder: European Commission (EC)
  • Project Code: 690575
  • Funding stream: H2020 | MSCA-RISE
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