Probing late neutrino mass properties with supernova neutrinos

Joseph Baker, Haim Goldberg, Gilad Perez, Ina Sarcevic

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

Models of late-time neutrino mass generation contain new interactions of the cosmic background neutrinos with supernova relic neutrinos (SRNs). Exchange of an on-shell light scalar may lead to significant modification of the differential SRN flux observed at earth. We consider an Abelian U(1) model for generating neutrino masses at low scales, and show that there are cases for which the changes induced in the flux allow one to distinguish the Majorana or Dirac nature of neutrinos, as well as the type of neutrino mass hierarchy (normal or inverted or quasidegenerate). In some region of parameter space the determination of the absolute values of the neutrino masses is also conceivable. Measurements of the presence of these effects may be possible at the next-generation water Cerenkov detectors enriched with Gadolinium, or a 100 kton liquid argon detector.

Original languageEnglish (US)
Article number063004
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume76
Issue number6
DOIs
StatePublished - Sep 12 2007

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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