期刊
PHYSICAL REVIEW D
卷 90, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.111103
关键词
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资金
- U.S. Department of Energy
- National Science Foundation
- Italian Istituto Nazionale di Fisica Nucleare
- Ministry of Education, Culture, Sports, Science and Technology of Japan
- Natural Sciences and Engineering Research Council of Canada
- National Science Council of the Republic of China
- Swiss National Science Foundation
- A. P. Sloan Foundation
- Bundesministerium fur Buildung und Forschung, Germany
- Korean World Class University Program
- National Research Foundation of Korea
- Science and Technology Facilities Council, United Kingdom
- Royal Society, United Kingdom
- Russian Foundation for Basic Research
- Ministerio de Ciencia e Innovacion, Spain
- Programa Consolider-Ingenio, Spain
- Slovak RD Agency
- Academy of Finland
- Australian Research Council (ARC)
- EU community Marie Curie Fellowship [302103]
- STFC [ST/L00352X/1, ST/K00140X/1, ST/K00137X/1, ST/M000761/1, ST/L006464/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L006464/1, ST/K00137X/1, ST/M001474/1, ST/M000761/1, ST/L00352X/1, ST/K001418/1, ST/K00140X/1] Funding Source: researchfish
- ICREA Funding Source: Custom
We report a measurement of the indirect CP-violating asymmetries (A(Gamma)) between effective lifetimes of anticharm and charm mesons reconstructed in D-0 --> K+K- and D-0 --> pi(+)pi(-) decays. We use the full data set of proton-antiproton collisions collected by the Collider Detector at Fermilab experiment and corresponding to 9.7 fb(-1) of integrated luminosity. The strong-interaction decay D*(+) --> D-0 pi(+) is used to identify the meson at production as D-0 or (D) over bar (0). We statistically subtract D-0 and (D) over bar (0) mesons originating from b-hadron decays and measure the yield asymmetry between anticharm and charm decays as a function of decay time. We measure A(Gamma)(K+K- ) = (-0.19 +/- 0.15(stat) +/- 0.04(syst))% and A(Gamma)(pi(+)pi(-)) = (- 0.01 +/- 0.18(stat) +/- 0.03(syst)%. The results are consistent with the hypothesis of CP symmetry and their combination yields A(Gamma) = (- 0.12 +/- 0.12)%.
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