Can two Bosons 'collide' in the same sense as the Fermions (Since Pauli's exclusion principle is not applicable for Bosons)? The Leptons have anti-leptons (positron, anti-muon, anti-tau and three anti-neutrinos). Each of the 6 Quarks have their corresponding anti-quark. So, do the gauge bosons (photon, gluon, Z & W, graviton) have corresponding anti-particles? If so, what happens when a gauge boson and it's anti-particle meet up at the same point in space?