TY - JOUR
T1 - Evidence for CP Violation in Time- Integrated D-0 → h(-)h(+) Decay Rates
AU - Aaij, R
AU - van den Brand, J.F.J.
AU - Dettori, F.
AU - Ketel, T.J.
AU - Koopman, R.
AU - Lambert, R.W.
AU - Merk, M.H.M.
AU - Raven, H.G.
AU - Schiller, M.
AU - LHCb, Collaboration
PY - 2012
Y1 - 2012
N2 - A search for time-integrated CP violation in D0 → h-h+ (h = K, π) decays is presented using 0.62 fb-1 of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D∗+ → D0π+ and D∗- → D¯0π- decay chains. The difference in CP asymmetry between D0 → K-K+ and D0 → π-π+, ΔACP ≈ ACP(K-K+)-ACP(π-π+), is measured to be [-0.82 ± 0.21(stat) ± 0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations. © 2012 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
AB - A search for time-integrated CP violation in D0 → h-h+ (h = K, π) decays is presented using 0.62 fb-1 of data collected by LHCb in 2011. The flavor of the charm meson is determined by the charge of the slow pion in the D∗+ → D0π+ and D∗- → D¯0π- decay chains. The difference in CP asymmetry between D0 → K-K+ and D0 → π-π+, ΔACP ≈ ACP(K-K+)-ACP(π-π+), is measured to be [-0.82 ± 0.21(stat) ± 0.11(syst)]%. This differs from the hypothesis of CP conservation by 3.5 standard deviations. © 2012 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.
U2 - 10.1103/PhysRevLett.108.111602
DO - 10.1103/PhysRevLett.108.111602
M3 - Article
SN - 0031-9007
VL - 108
JO - Physical Review Letters
JF - Physical Review Letters
IS - 11
M1 - 111602
ER -
