[alxprc]

As it says in the article, this is the discovery of parity, P, violation in a system where it's not been seen before. In a "nice" universe, one might expect mirror images to behave the same, but here they've discovered that interactions between electrons and quarks are different depending on the spin of the electron.

So, it's related to CP violation in the sense that it something "violates CP symmetry" if it's behaviour changes when you flip the charge and the parity of the system simultaneous. Here, they only flip the parity.