LHCb has evidence of new physics! (maybe)

Résonaances writes LHCb has evidence of new physics! (maybe). Unfortunately I can't really follow it.

"It finally happened: we have the first official claim of new physics at the LHC. Amusingly, it comes not from ATLAS or CMS, but from LHCb, a smaller collaboration focused on studying processes with hadrons formed by b- and c-quarks. Physics of heavy quark flavors is a subject for botanists and, if I only could, I would never mention it on this blog. Indeed, a mere thought of the humongous number of b- and c-hadrons and of their possible decay chains gives me migraines. Moreover, all this physics is customarily wrapped up in a cryptic notation ensuring that only the chose few can decipher the message. Unfortunately, one cannot completely ignore flavor physics because it may be sensitive to new particles beyond the Standard Model, even very heavy ones. This is especially true for CP-violating observables, because those are very small in the Standard Model, thus a new physics contribution may easily stick out.

So, the news of the day is that LHCb observed direct CP violation in neutral D-meson decays. More precisely, using 580 pb-1 of data they measured the difference of time-integrated CP asymmetries of D→ π+π- and D→ K+K- decays. The result is...3.5 sigma away from the Standard Model prediction which is approximately zero!"