Possible cosmogenic neutrino constraints on Planck-scale Lorentz violation

Link:
Autor/in:
Erscheinungsjahr:
2010
Medientyp:
Text
Schlagworte:
  • Invariance
  • Standard model (particle physics)
  • Invariance violation
  • Gravitation
  • Black Holes (Astronomy)
  • Models
  • Invariance
  • Standard model (particle physics)
  • Invariance violation
  • Gravitation
  • Black Holes (Astronomy)
  • Models
Beschreibung:
  • We study, within an effective field theory framework, O (E-2/M-Pl(2)) Planck-scale suppressed Lorentz invariance violation (LV) effects in the neutrino sector, whose size we parameterize by a dimensionless parameter eta(nu). We find deviations from predictions of Lorentz invariant physics in the cosmogenic neutrino spectrum. For positive O (1) coefficients no neutrino will survive above 10(19) eV. The existence of this cutoff generates a bump in the neutrino spectrum at energies of 10(17) eV. Although at present no constraint can be cast, as current experiments do not have enough sensitivity to detect ultra-high-energy neutrinos, we show that experiments in construction or being planned have the potential to cast limits as strong as eta(nu) less than or similar to 10(-4) on the neutrino LV parameter, depending on how LV is distributed among neutrino mass states. Constraints on eta(nu) < 0 can in principle be obtained with this strategy, but they require a more detailed modeling of how LV affects the neutrino sector.
Lizenz:
  • info:eu-repo/semantics/openAccess
Quellsystem:
Forschungsinformationssystem der UHH

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Quelldatensatz
oai:www.edit.fis.uni-hamburg.de:publications/560b277b-d4da-424f-9ecd-f9c557cfdf89