TH Meeting on Particle Physics Phenomenology

Ultra high energy cosmic rays: clustering, GUT scale and neutrino masses

Name: Ultra high energy cosmic rays: clustering, GUT scale and neutrino masses
Start: 2001-08-10T14:00:00+02:00
End: 2001-08-10T15:00:00+02:00
Location: CERN

by Zoltan Fodor (Eotvos University, Budapest)

Friday 10 Aug 2001, 14:00 → 15:00 Europe/Zurich

TH Auditorium (CERN)

TH Auditorium

CERN

Description

Using the clustering properties of ultrahigh energy cosmic rays we determine the density of compact sources. We analyze the spectrum of the ultrahigh energy cosmic rays. With a maximum likelihood analysis we show that the observed spectrum is consistent with the decay of extragalactic GUT scale particles (predicted mass $m_X=10^b$ GeV, where $b=14.6_-1.7^+1.6$) or with a Z-burst scenario (neutrino mass $2.34^+1.29_-0.84$ eV or $0.26^+0.20_-0.14$ eV, assuming Galactic halo or extragalactic origin for the power part of the spectrum, respectively).