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Light right-handed neutrinos: + an incursion in cosmology

Summary: Light right-handed neutrinos:
why not?
+ an incursion in cosmology
R. Barbieri
"Neutrinos in Venice"
February 7-10, 2006
B, Hall, Oliver, Strumia
Amendola, B
Appealing theory or physical reality?
" The typical lifetime of a new trend in high energy physics
and cosmology nowadays is about 5 to 10 years. If it
survived for a longer time, the chances are that it will be
with us for quite a while" (Linde)
The standard answer:
the seesaw bans them
(no evidence for them - see below)
The Standard Model, emended to include
neutrino masses
= Li"!


Source: Abbondandolo, Alberto - Scuola Normale Superiore of Pisa


Collections: Mathematics