Hints on the scarcity of anti-matter

We live in a world of matter. But physicists believe that, in the early universe shortly after the big bang, the same amount of matter and anti-matter should have been produced. This belief is build upon the so-called CP symmetry. So, a big mystery faced with cosmologists is, what causes anti-matter so rare around us ? Recently, a research group at Fermi Lab made a measurement that may give allusions to the deep. The collide particles and look at how many muons and anti-muons might be produced. It turns out that, they occur at different abundances. And the gap is bigger than might be expected upon Stander Model. More precise measurements need be taken to corroborate or falsify this result.