@article{10902/2187,
year = {2012},
month = {1},
url = {http://hdl.handle.net/10902/2187},
abstract = {We report on a measurement of CP-violating asymmetries (ACP) in the Cabibbo-suppressed D0→π+π- and D0→K+K- decays reconstructed in a data sample corresponding to 5.9  fb-1 of integrated luminosity collected by the upgraded Collider Detector at Fermilab. We use the strong decay D*+→D0π+ to identify the flavor of the charmed meson at production and exploit CP-conserving strong cc̅ pair production in pp̅ collisions. High-statistics samples of Cabibbo-favored D0→K-π+ decays with and without a D*± tag are used to correct for instrumental effects and significantly reduce systematic uncertainties. We measure ACP(D0→π+π-)=(+0.22±0.24(stat)±0.11(syst))% and ACP(D0→K+K-)=(-0.24±0.22(stat)±0.09(syst))%, in agreement with CP conservation. These are the most precise determinations from a single experiment to date. Under the assumption of negligible direct CP violation in D0→π+π- and D0→K+K- decays, the results provide an upper limit to the CP-violating asymmetry in D0 mixing, |ACPind(D0)|<0.13% at the 90% confidence level.},
publisher = {American Physical Society},
publisher = {Physical review. D, Particles, fields, gravitation, and cosmology, vol. 85, iss. 1, art. num. 012009 (2012)},
title = {Measurement of CP-violating asymmetries in D0→π+π- and D0→K+K- decays at CDF},
author = {Aaltonen, Timo Antero and Álvarez González, Bárbara and Amidei, Dante and Anastassov, Anton and Annovi, Alberto and Antos, Jaroslav and Apollinari, Giorgio and Appel, Jeffrey A. and Casal Laraña, Bruno and Cuevas Maestro, Francisco Javier and Gómez Gramuglio, Gervasio and Palencia Cortezón, José Enrique and Rodrigo Anoro, Teresa and Ruiz Jimeno, Alberto and Scodellaro, Luca and Vila Álvarez, Iván  and Vilar Cortabitarte, Rocío and Vizán García, Jesús Manuel and Apresyan, Artur and Amerio, Silvia},
}