Thus, heavy right-handed neutrinos look to be the first real glimpse of physics beyond the Standard Model.

On a fundamental level, such an interaction emerges in the seesaw mechanism where heavy right-handed neutrinos are added to the theory.

According to this mechanism, the origin of neutrino mass is attributed to the existence of its heavy right-handed neutrino.

In laboratories in Canada, California and England, observations of heavy neutrinos are causing gentlemanly but intense controversy.

Hence the kink: above it, no heavy neutrinos are ever given off.

That means the heavy neutrinos must decay into something far less massive, quite quickly.

Other physics goals are the search for heavy neutrinos, measuring Fermi/Gamov-Teller mixing ratios, measuring electron capture probabilities, etc.

Riazuddin proposed that this such interaction can be avoid when two of the heavy right-hand neutrinos are (nearly) degenerate.

In 1977, Lee and Weinberg wrote an article about the lower bound on heavy neutrino mass.

Our testing showed that death-bomb heavy neutrinos would penetrate solid rock or metal to a depth of six kilometers.