We discuss the generalization of the Jarlskog condition of CP conservation for the case of the Standard Model with four quark generations. We express this condition in terms of the 3 Jarlskog invariants of the CKM matrix. Next, we present the test for the existence of the fourth quark generation in terms of the Jarlskog invariants involving only known particles.
- Cabibbo-Kobayashi-Maskawa matrix
- four generations of quarks
- Standard Model