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SUMMARY:The Cosmic Neutrino Background and How to Detect It
DTSTART:20260625T010000Z
DTEND:20260625T020000Z
DTSTAMP:20260704T013900Z
UID:indico-event-18093@indico.global
DESCRIPTION:Speakers: Gonzalo Herrera\n\nThe Cosmic Neutrino Background (C
 nuB) is the oldest relic population of Standard Model particles in the Uni
 verse\, carrying information from roughly one second after the Big Bang. I
 ts detection would mark a major milestone for cosmology\, astrophysics and
  particle physics. Here I will discuss a promising detection strategy rely
 ing on the scattering of cosmic rays off CnuB neutrinos over cosmological 
 distances\, inducing a flux of relic neutrinos boosted to high energies. T
 his boosted CnuB component can extend into the energy range accessible to 
 neutrino telescopes such as IceCube and next-generation detectors. I will 
 assess the feasibility of this scenario in some detail\, identifying the a
 strophysical and experimental conditions under which future ultra-high-ene
 rgy neutrino telescopes could detect the CnuB and distinguish its signal f
 rom the cosmogenic neutrino background. I will also discuss a complementar
 y channel based on gamma rays associated with these scattering processes. 
 Finally\, I will show how the detection of an enhanced cosmological CnuB d
 ensity could reveal that neutrinos comprise an important fraction of the d
 ark matter content of the Universe.\n\nhttps://indico.global/event/18093/
URL:https://indico.global/event/18093/
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