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How many elementary particles are there?

  1. Jun 16, 2008 #1
    I am confused. I thought that the standard model included 6 quarks and 6 antiquarks, 6 leptons and 6 antileptons and 5 bosons (W+,W-,Z,photon,gluon).

    However in Griffith's "Introduction to Elementary Particles" (on page 48) he says that there are "12 leptons, 36 quarks, 12 mediators".

    I am thinking of the t,b,u,d,s,c and their antiparticles for the quarks.

    So can someone please account for the remaining 24 quarks and the remaining 7 bosons?
  2. jcsd
  3. Jun 16, 2008 #2
    Color is as good a charge as electric charge. You miss a factor 3 on quarks, and a factor 9 on gluons minus one color scalar gluon.
  4. Jun 16, 2008 #3
    Higg's Boson and graviton are the only other fundamental bosons I've heard of, and they're not even verified yet.

    Oh, if you count the 8 gluons it works out. Der...
  5. Jun 16, 2008 #4
    As mentioned by the OP, the photon, the Ws and the Z are other gauge bosons. Those are established beyond doubt.
  6. Jun 17, 2008 #5
    Yeah, I wish I could have deleted that post. For the future, I promise to be less impulsive.
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