Recent Results on CP Violation in B Decay

This paper , 40 years after the discovery of CP violation ¹ in neutral kaon decay in the famous experiment of Brookhaven, presents the most recent results on the CP violation in the b sector as come out of the experiments BABAR and BELLE that are taking data since 1999 at PEPII and KEKB e⁺e^- asymmetric BFactories operating at the center of mass energy corresponding to the mass of the Υ_4s. After their initial discovery of the CP violation and the measurement of sin2β in 2001 ², now is the time of the observation of direct CP violation by BABAR , confirmed by BELLE , the initial measurements of α, the first clue of γ and the very intriguing results about the measurements of sin2β in the time dependent analysis of decay channels via penguin loops, where b-> sbar {s}s and b-> sbar {d}d.