We report a measurement of the difference (ΔA CP) 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 9.7fb -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 ΔA CP=[-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. © 2012 American Physical Society.

Measurement of the difference in CP-violating asymmetries in D0→K +K - and D0→π +π - decays at CDF / Aaltonen T., Alvarez Gonzalez B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - ELETTRONICO. - 109:(2012), pp. 0-0. [10.1103/PhysRevLett.109.111801]

Measurement of the difference in CP-violating asymmetries in D0→K +K - and D0→π +π - decays at CDF

Latino G.;
2012

Abstract

We report a measurement of the difference (ΔA CP) 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 9.7fb -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 ΔA CP=[-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. © 2012 American Physical Society.
2012
109
0
0
Aaltonen T.; Alvarez Gonzalez B.; Amerio S.; Amidei D.; Anastassov A.; Annovi A.; Antos J.; Apollinari G.; Appel J.A.; Arisawa T.; Artikov A.; Asaadi ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1196111
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