Proton decay would be an example of such a process taking place, but has never been observed.

No evidence for proton decay has yet been detected, however.

In one year of observation no proton decay event was recorded.

The following timeline assumes that proton decay does not take place.

There is currently no experimental evidence that proton decay occurs.

If proton decay takes place, the sole survivors will be black holes.

But an infalling observer never has time to see the proton decay.

If virtual black holes exist, they provide a mechanism for proton decay.

Proton decay is a prediction of many grand unification theories.

Proton decay was, for a time, an extremely exciting area of experimental physics research.

Of course, if scientists do detect a proton decay, the whole universe, not just theorists, will be in serious trouble.

He got one where he had to sit down in a coal mine waiting for proton decay.

It was a large water Čerenkov detector designed to search for proton decay.

To date, there is no experimental evidence of proton decay.)

Thus one might think that the possibility of spontaneous proton decay could not be tested experimentally.

They had already filtered out thousands of phantom events that imitated true proton decay.

Nearing the event horizon, environmental effects accelerate proton decay.

This allowed events which might otherwise have looked like proton decay, but were actually caused by cosmic rays, to be discarded.

The upper bounds on proton decay rate can also be satisfied because the squarks are very heavy as well.

This is why the current search for proton decay is practical.)

These estimates predict that a large volume of material will occasionally exhibit a spontaneous proton decay.

In 1982 he explored the possible proton decay, and found a first indication of neutrino oscillations.

If protons are not stable, white dwarfs will also be kept warm by energy released from proton decay.

To date however, experiments have shown that if proton decay occurs, the half-life must be greater than 6.6 x 10 years.

The subsequent evolution of the universe depends on the existence and rate of proton decay.