Experimental Limit on the Cosmic Diffuse Ultrahigh Energy Neutrino Flux
Abstract
We report results from 120h of live time with the Goldstone lunar ultrahigh energy neutrino experiment (GLUE). The experiment searches for ≤10 ns microwave pulses from the lunar regolith, appearing in coincidence at two large radio telescopes separated by 22km and linked by optical fiber. Such pulses would arise from subsurface electromagnetic cascades induced by interactions of ≥100 EeV (1 EeV=1018 eV neutrinos in the lunar regolith. No candidates are yet seen, and the implied limits constrain several current models for ultrahigh energy neutrino fluxes.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 2004
- DOI:
- arXiv:
- arXiv:astro-ph/0310232
- Bibcode:
- 2004PhRvL..93d1101G
- Keywords:
-
- 98.70.Sa;
- 95.55.Vj;
- 96.40.Tv;
- Cosmic rays;
- Neutrino muon pion and other elementary particle detectors;
- cosmic ray detectors;
- Astrophysics;
- High Energy Physics - Experiment;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages, 4 figures, revtex4 style. New intro section, Fig. 2, Fig 4