Spin-0 antiparticle

[Black Integra]

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.

[Pengwuino]

The photon is spin 1

[Bill_K]

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).

[Black Integra]

Thanks everyone

@Penguin: my fault

[robert2734]

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)?

[fzero]

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)?

The indices on the SU(3) generators are color, so each 3x3 matrix naturally has a color and anticolor assigned to it.

[lpetrich]

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.