Abstract
Ultrahigh energy neutrinos [Formula presented] scatter on relic neutrinos [Formula presented] producing Z bosons, which can decay hadronically producing protons (Z burst). We compare the predicted proton spectrum with the observed ultrahigh energy cosmic ray (UHECR) spectrum and determine the mass of the heaviest [Formula presented] via a maximum likelihood analysis. Our prediction depends on the origin of the powerlike part of the UHECR spectrum: [Formula presented] for Galactic halo and [Formula presented] for extragalactic origin. The necessary [Formula presented] flux should be detected in the near future.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4 |
| Number of pages | 1 |
| Journal | Physical review letters |
| Volume | 88 |
| Issue number | 17 |
| DOIs | |
| State | Published - 2002 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)