TY  - JOUR
AU  - Jeong, Y. S.
AU  - Palomares-Ruiz, S.
AU  - Reno, M. H.
AU  - Sarcevic, I.
PY  - 2018
DA  - 2018//
TI  - Probing secret interactions of eV-scale sterile neutrinos with the diffuse supernova neutrino background
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 019
EP  - 43pp
VL  - 06
IS  - 6
PB  - Iop Publishing Ltd
KW  - cosmological neutrinos
KW  - neutrino theory
KW  - supernova neutrinos
AB  - Sterile neutrinos with mass in the eV-scale and large mixings of order theta(0) similar or equal to 0.1 could explain some anomalies found in short-baseline neutrino oscillation data. Here, we revisit a neutrino portal scenario in which eV-scale sterile neutrinos have self-interactions via a new gauge vector boson phi. Their production in the early Universe via mixing with active neutrinos can be suppressed by the induced effective potential in the sterile sector. We study how different cosmological observations can constrain this model, in terms of the mass of the new gauge boson, M-phi, and its coupling to sterile neutrinos, g(s). Then, we explore how to probe part of the allowed parameter space of this particular model with future observations of the diffuse supernova neutrino background by the Hyper-Kamiokande and DUNE detectors. For M-phi similar to 5 – 10 keV and g(s) similar to 10-(4) – 10(-2), as allowed by cosmological constraints, we find that interactions of diffuse supernova neutrinos with relic sterile neutrinos on their way to the Earth would result in significant dips in the neutrino spectrum which would produce unique features in the event spectra observed in these detectors.
SN  - 1475-7516
UR  - http://arxiv.org/abs/1803.04541
UR  - https://doi.org/10.1088/1475-7516/2018/06/019
DO  - 10.1088/1475-7516/2018/06/019
LA  - English
N1  - WOS:000434991300006
ID  - Jeong_etal2018
ER  -