4 ms·

Did they not name it?

• mmusson 9y ago
  Ξ++ cc or double charmed Xi.
  • _asummers 9y ago
    That's neat. I see the Xi. Does the ++ mean double, and the cc mean charmed? Having trouble parsing that, even with the sub and superscripts from the article. I guess more concretely, would a triple charmed (if that means anything) be +++ cc or ++ ccc?
    • jwfxpr 9y ago
      There are constraints on how quarks combine, according to the standard model, which mean (among other things) that you won't get three of the same quark combining to form a particle. The cc subscript indicates the presences of two charm quarks, and the ++ indicates the particle has an electric charge Q=+2. The subscript values show the presence of heavy quarks: charm (c), bottom (b) or top (t) quarks are heavy. The superscript is electric charge (Q), a value between -1 and +2 (-, 0, +, or ++).
    • dukwon 9y ago
      ++ means a charge of +2, cc means two charm quarks (doubly-charmed) A triply-charmed baryon would be the Ωccc++
• tux3 9y ago
  I believe it's called the double charmed Xi baryon, but I'm not sure if it has a pet name. There's a whole bestiary of particles like this one that don't really stick out as particularly interesting, I imagine it's simpler to stick to the boring descriptive names.