The p t-differential production cross sections of the prompt (B feed-down subtracted) charmed mesons D 0 , D + , and D * + in the rapidity range |y| < 0.5, and for transverse momentum 1 < p t < 12 GeV/c, were measured in proton-proton collisions at √ s = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The analysis exploited the hadronic decays