We report a measurement of the difference (ΔACP) between time-integrated CP-violating asymmetries in D0→K+K− and D0→π+π− decays reconstructed in the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab, corresponding to 9.7 fb−1 of integrated luminosity. The strong decay D*+→D0π+ is used to identify the charm meson at production as D0 or D¯¯¯0. We measure ΔACP=[−0.62±0.21(stat)±0.10(syst)]%, which differs from zero by 2.7 Gaussian standard deviations. This result supports similar evidence for CP violation in charm-quark decays obtained in proton-proton collisions.
Titolo: | Measurement of the Difference in CP-Violating Asymmetries in D0→K+K− and D0→π+π− Decays at CDF |
Autori: | |
Data di pubblicazione: | 2012 |
Rivista: | |
Abstract: | We report a measurement of the difference (ΔACP) between time-integrated CP-violating asymmetries in D0→K+K− and D0→π+π− decays reconstructed in the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab, corresponding to 9.7 fb−1 of integrated luminosity. The strong decay D*+→D0π+ is used to identify the charm meson at production as D0 or D¯¯¯0. We measure ΔACP=[−0.62±0.21(stat)±0.10(syst)]%, which differs from zero by 2.7 Gaussian standard deviations. This result supports similar evidence for CP violation in charm-quark decays obtained in proton-proton collisions. |
Handle: | http://hdl.handle.net/11390/983548 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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