This is significant because binding 2 heavy quarks together is very hard to do because they decay so fast.
All the particles made from just 3 light quarks have been found. And I think all of the ones made with 1 heavy quark and 2 light ones have also been found.
This is only the 2nd particle made from 2 heavy quarks that has ever been found.
It's not a coincidence that both of those were made with charm quarks, because charm quarks are the lightest of the heavy ones.
None made of 3 heavy quarks has been found (yet).
Also: A particle made with a top quark is not possible - it decays too quickly.
steve_gh 3 days ago |
Are there are other flavours of proton still to be discovered? Can you (theoretically) build a proton with any two quarks selected from {up, charm, top} and one selected from {down, strange, bottom}?
All the particles made from just 3 light quarks have been found. And I think all of the ones made with 1 heavy quark and 2 light ones have also been found.
This is only the 2nd particle made from 2 heavy quarks that has ever been found.
It's not a coincidence that both of those were made with charm quarks, because charm quarks are the lightest of the heavy ones.
None made of 3 heavy quarks has been found (yet).
Also: A particle made with a top quark is not possible - it decays too quickly.