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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.)

On the role of neutrinos telescopes in the search for Dark Matter annihilations in the Sun

Texto completo
Fornengo, Nicolao [1, 2] ; Masiero, Antonio [3, 4] ; Queiroz, Farinaldo S. [5, 6] ; Yaguna, Carlos E. [7]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Ist Nazl Fis Nucl, Sez Torino, Via P Giuria 1, I-10125 Turin - Italy
[2] Univ Torino, Dipartimento Fis, Via P Giuria 1, I-10125 Turin - Italy
[3] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua - Italy
[4] Univ Padua, Dipartimento Fis & Astron G Galilei, Padua - Italy
[5] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg - Germany
[6] Univ Fed Rio Grande do Norte, Int Inst Phys, Campus Univ, BR-59078970 Natal, RN - Brazil
[7] UPTC, Escuela Fis, Ave Cent Norte, Tunja - Colombia
Número total de Afiliações: 7
Tipo de documento: Artigo Científico
Fonte: Journal of Cosmology and Astroparticle Physics; n. 11 DEC 2017.
Citações Web of Science: 2

The observation of GeV neutrinos coming from the Sun would be a clear signal of dark matter if neutrinos produced by cosmic rays interaction are an irreducible but suppressed background. Current neutrino detectors have so far failed to detect such a signal, however, and bounds from direct and indirect dark matter searches may significantly restrict the possibility of observing it in future experiments such as Hyper-Kamiokande or IceCube-Gen2. In this work we assess, in the light of current data and of expected experimental sensitivities, the prospects for the detection of a neutrino signal from dark matter annihilations in the Sun. To be as general as possible, equilibrium between the capture and the annihilation rates in the Sun is not assumed in our analysis; instead, the dark matter scattering and annihilation cross sections are taken as free and independent parameters. We consider capture via both spin-dependent and spin-independent interactions, and annihilations into three representative final states: b (b) over bar , W (+) W-, and tau (+) tau(-). We find that when the capture in the Sun is dominated by spin-independent interactions, current direct detection bounds already preclude the observation of a neutrino signal in future experiments. For capture via spin-dependent interactions, a strong complementarity is observed, over most of the parameter space, between future neutrino detectors and planned direct and indirect dark matter detection experiments, such as PICO-500 and CTA. In this case, we also identify some regions of the parameter space that can be probed, via the neutrino flux from the Sun, only by future neutrino experiments. (AU)

Processo FAPESP: 16/01343-7 - ICTP Instituto Sul-Americano para Física Fundamental: um centro regional para física teórica
Beneficiário:Nathan Jacob Berkovits
Linha de fomento: Auxílio à Pesquisa - Temático