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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Are IceCube neutrinos unveiling PeV-scale decaying dark matter?

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Autor(es):
Esmaili, Arman [1] ; Serpico, Pasquale Dario [2]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil
[2] Univ Savoie, LAPTh, CNRS, F-74941 Annecy Le Vieux - France
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of Cosmology and Astroparticle Physics; n. 11 NOV 2013.
Citações Web of Science: 82
Resumo

Recent observations by IceCube, notably two PeV cascades accompanied by events at energies similar to (30-400) TeV, are clearly in excess over atmospheric background fluxes and beg for an astroparticle physics explanation. Although some models of astrophysical accelerators can account for the observations within current statistics, intriguing features in the energy and possibly angular distributions of the events make worth exploring alternatives. Here, we entertain the possibility of interpreting the data with a few PeV mass scale decaying dark matter, with lifetime of the order of 10(27) s. We discuss generic signatures of this scenario, including its unique energy spectrum distortion with respect to the benchmark E-v(-2) expectation for astrophysical sources, as well as peculiar anisotropies. A direct comparison with the data show a good match with the above-mentioned features. We further discuss possible future checks of this scenario. (AU)

Processo FAPESP: 09/17924-5 - Fenomenologia de neutrinos em telescópios de neutrinos
Beneficiário:Arman Esmaili Taklimi
Linha de fomento: Bolsas no Brasil - Pós-Doutorado