Comment on Neutrino Radiative Decay Limits from the Infrared Background

Astronomy and Astrophysics – Astrophysics

Scientific paper

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1 page, including 1 eps fig

Scientific paper

10.1103/PhysRevLett.81.4020

Recent observations of TeV gamma rays from distant sources provide new limits
on the cosmic infrared background and thus on radiative decays of background
neutrinos. I translate these limits into bounds on transition dipole moments
and compare them with limits from the energy-loss of globular-cluster stars.
The latter are more restrictive for neutrino masses below 1-2 eV.

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