2012/07/31 by CDF Collaboration, T. Aaltonen, B. Álvarez González +98 · 97 citations
Physics and Astronomy · #Astrophysics #CP violation #Charm (quantum number) #Collider #Collider Detector at Fermilab #Fermilab #High-Energy Particle Collisions Research #Large Hadron Collider #Luminosity #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Standard Model (mathematical formulation) #hep-ex #hep-ph
paper · pdf · doi:10.1103/physrevlett.109.111801
published in Physical Review Letters 109(11), 111801 (American Physical Society) · Phys. Rev. Lett. 109, 111801 (2012)
openalex publication_date 2012/09/11 · arxiv created 2012/09/18 · arxiv updated 2012/09/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
We report a measurement of the difference (\ensuremathΔACP) between time-integrated CP-violating asymmetries in D0\ensuremath→K+K^\ensuremath- and D0\ensuremath→\ensuremathπ+\ensuremathπ^\ensuremath- decays reconstructed in the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab, corresponding to 9.7 fb^\ensuremath-1 of integrated luminosity. The strong decay D*+\ensuremath→D0\ensuremathπ+ is used to identify the charm meson at production as D0 or D0. We measure \ensuremathΔACP=[\ensuremath-0.62\ifmmode±\else\textpm\fi0.21(stat)\ifmmode±\else\textpm\fi0.10(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.