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Spin-0 antiparticle

  1. Dec 29, 2011 #1
    I've heard that photon and antiphoton is the same thing. Is this true for all of those spin-0 particles? I'm so curious.
     
  2. jcsd
  3. Dec 29, 2011 #2

    Pengwuino

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    The photon is spin 1
     
  4. Dec 29, 2011 #3

    Bill_K

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    The Standard Model Higgs is its own antiparticle. Gluons carry color charge. An 'anti-gluon' is another gluon, but with a different color. In fact, gluons carry two color charges. For example a gluon might be (blue, anti-red). Its antiparticle would be (red, anti-blue).
     
  5. Dec 29, 2011 #4
    Thanks everyone

    @Penguin: my fault
     
  6. Dec 30, 2011 #5
    Is assigning a color (or two colors) to a gluon a convenience? Don't gluons carry one of the 8 generator matrices of SU(3)?
     
  7. Dec 30, 2011 #6

    fzero

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    The indices on the SU(3) generators are color, so each 3x3 matrix naturally has a color and anticolor assigned to it.
     
  8. Dec 30, 2011 #7
    From the 9 possible color-anticolor mixtures, one can construct a singlet "colorless" state that does not interact with the others. That is why gluons have 8 and not 9 color states.

    Spin is a sort of built-in angular momentum, angular momentum carried by field geometry. You can see photon spin in circular polarization.

    Spin-0 particles need not be their antiparticles. Supersymmetric extensions of the Standard Model predict charged Higgs particles, and the positive and negative ones are each other's antiparticles.
     
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