Mini Z' Burst from Relic Supernova Neutrinos and Late Neutrino Masses

Details Mini Z' Burst from Relic Supernova Neutrinos and Late Neutrino Masses Mini Z' Burst from Relic Supernova Neutrinos and Late Neutrino Masses

2005-05-25

arxiv.org/abs/hep-ph/0505221v3

JHEP0611:023,2006

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 8 figures, version to be published in JHEP

Scientific paper

10.1088/1126-6708/2006/11/023

In models in which neutrinos are light, due to a low scale of symmetry breaking, additional light bosons are generically present. We show that the interaction between diffuse relic supernova neutrinos (RSN) and the cosmic background neutrinos, via exchange of these light scalars, can result in a dramatic change of the supernova (SN) neutrinos flux. Measurement of this effect with current or future experiments can provide a spectacular direct evidence for the low scale models. We demonstrate how the observation of neutrinos from SN1987A constrains the symmetry breaking scale of the above models. We also discuss how current and future experiments may confirm or further constrain the above models, either by detecting the ``accumulative resonance'' that diffuse RSN go through or via a large suppression of the flux of neutrinos from nearby < O(Mpc) SN bursts.

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