The signatures of secondary leptons in radio-neutrino detectors in ice. (arXiv:2003.13442v2 [astro-ph.HE] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Garcia_Fernandez_D/0/1/0/all/0/1">Daniel García-Fernández</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Glaser_C/0/1/0/all/0/1">Christian Glaser</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Nelles_A/0/1/0/all/0/1">Anna Nelles</a>
The detection of the radio emission following a neutrino interaction in ice
is a promising technique to obtain significant sensitivities to neutrinos with
energies above PeV. The detectable radio emission stems from particle showers
in the ice. So far, detector simulations have considered only the radio
emission from the primary interaction of the neutrino. For this study, existing
simulation tools have been extended to cover secondary interactions from muons
and taus. We find that secondary interactions of both leptons add up to 25% to
the effective volume of neutrino detectors. Also, muon and tau neutrinos can
create several detectable showers, with the result that double signatures do
not constitute an exclusive signature for tau neutrinos. We also find that the
background of atmospheric muons from cosmic rays is non-negligible for in-ice
arrays and that an air shower veto should be considered helpful for radio
detectors.
The detection of the radio emission following a neutrino interaction in ice
is a promising technique to obtain significant sensitivities to neutrinos with
energies above PeV. The detectable radio emission stems from particle showers
in the ice. So far, detector simulations have considered only the radio
emission from the primary interaction of the neutrino. For this study, existing
simulation tools have been extended to cover secondary interactions from muons
and taus. We find that secondary interactions of both leptons add up to 25% to
the effective volume of neutrino detectors. Also, muon and tau neutrinos can
create several detectable showers, with the result that double signatures do
not constitute an exclusive signature for tau neutrinos. We also find that the
background of atmospheric muons from cosmic rays is non-negligible for in-ice
arrays and that an air shower veto should be considered helpful for radio
detectors.
http://arxiv.org/icons/sfx.gif
