He said the parameters for our universe, including the Higgs mass value as well as the mass of another subatomic particle known as the top quark, suggest that we're just at the edge of stability, in a "metastable" state. Physicists have been contemplating such a possibility for more than 30 years. Back in 1982, physicists Michael Turner and Frank Wilczek wrote in Nature that "without warning, a bubble of true vacuum could nucleate somewhere in the universe and move outwards at the speed of light, and before we realized what swept by us our protons would decay away."
These seem to imply:
1. a Higgs boson is a metastable state, would decay in top quark
2. the half-life of this metastable state is billions of years
3. the moment even a single such decay event happens, the other Higgs bosons around would "sense" this and spontaneously decay as well, in a sort of chain reaction happening in a Laser medium
If assumption 3 is valid, then 1. and 2. say it can happen any time (with very low probability, but not impossible)
But, I wonder, what exactly suggest that 3. is a valid a
Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/d0mWIzOGY1c/story01.htm
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