Measurement of D0-D0bar mixing and search for CP violation in D0 -> K+K-, pi+pi- decays with the full Belle data set

We report an improved measurement of D0-D0bar mixing and a search for CP violation in D0 decays to CP-even final states K+K- and pi+pi-. The measurement is based on the final Belle data sample of 976/fb. The results are y_CP=(1.11 ± 0.22 ± 0.09)% and A_Gamma=(-0.03 ± 0.20 ± 0.07)%, where the first uncertainty is statistical and the second is systematic.