alt Hacker NewsGood questions…
Another one: Is this newly discovered particle stable, or does it only exist for a short time before transforming in some way? I didn’t see any mention of that in the article.
Is it theoretically possible to have atoms with 4x the proton mass, starting with hydrogen at atomic weight 4? Pu-239 could theoretically have an atomic weight of 521 instead of 239… Wild!
Replies
It's not stable, and no it's not theoretically possible.
A proton is the lightest stable baryon, and thus the only only stable one. It's not a coincidence - in particle physics if a lighter elementary particle is possible the heavier one will ALWAYS decay into it. "Whatever is not forbidden is mandatory." (Combination particles like atoms are more complicated because there are other things that might force the particle to exist.)
Haven't read this article but I think the one I read yesterday about this said it was short lived on the millionth of a millionth of a second scale.