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Some theories in circulation today contain a particle which could be better suited. It would be even much more heavy (~200 000 times the electron mass) and could have lifetimes even on the level of seconds (not longer than 10 seconds or so, because we would see effects in cosmology from the early universe).
Can you be a bit more specific about the kind of particle, and the theories, we're talking about?

Would one of the components of a Higgs multiplet work, or do you need the particle to be a fermion?

We have met the enemy, and he is us — Pogo

by Carrie (migeru at eurotrib dot com) on Thu Feb 21st, 2008 at 02:29:48 PM EST

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