You are right that T doesn’t include particle-antiparticle mixing, of course. My previous comment was confused, I should never comment at 4AM.
But still, the interaction Lagrangian of the Standard model is not invariant with respect to T, since it is invariant with respect to CPT and CP invariance is violated by the CKM matrix.
You are right that T doesn’t include particle-antiparticle mixing, of course. My previous comment was confused, I should never comment at 4AM.
But still, the interaction Lagrangian of the Standard model is not invariant with respect to T, since it is invariant with respect to CPT and CP invariance is violated by the CKM matrix.