Francis Halzen

I have read the papers of this phenomenologist for a long time now. He works at the University of Wisconsin, and together with Vernon Barger, author of the book, Collider Physics, have made that University one of the centers of particle phenomenology in the world.

Now Prof. Halzen just posted an analysis on line, with Aongus O'Murchadha, on neutrinos reaching Earth.

This is a very important window into the Universe. So far neutrinos have been observed coming from Supernova explosions, unfortunately these explosions are not planned nor frequent. Recently the Auger collaboration has tentatively identified Active Galactic Nuclei (AGNs), as huge accelerators in space producing the highest energy cosmic rays detected so far. Halzen and O'Murchadha, analyze in this paper the likelihood of detecting these neutrinos. According to them, all that is needed is bigger neutrino detector, twice as big as the ones now running.

Halzen et al. conclude:

"IceCube should be able to detect with 5σ confidence a flux at the predicted level within 3 years[16]."