Evidence for D{sup 0}-D{sup 0} Mixing Using the CDF II Detector

Journal Article · Fri Mar 28 00:00:00 EDT 2008 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.100.121802· OSTI ID:21123779

Aaltonen, T; Maki, T; Mehtala, P; Orava, R; Osterberg, K; Saarikko, H; Remortel, N van ^[1]; Adelman, J; Brubaker, E; Fedorko, W T; Grosso-Pilcher, C; Kim, Y K; Kwang, S; Levy, S; Paramonov, A A; Schmidt, M A; Shochet, M; Wolfe, C; Yang, U K; Yorita, K ^[2]

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1. Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki (Finland)
2. Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637 (United States)

We measure the time dependence of the ratio of decay rates for the rare decay D{sup 0}{yields}K{sup +}{pi}{sup -} to the Cabibbo-favored decay D{sup 0}{yields}K{sup -}{pi}{sup +}. A signal of 12.7x10{sup 3} D{sup 0}{yields}K{sup +}{pi}{sup -} decays was obtained using the Collider Detector at Fermilab II detector at the Fermilab Tevatron with an integrated luminosity of 1.5 fb{sup -1}. We measure the D{sup 0}-D{sup 0} mixing parameters (R{sub D},y{sup '},x{sup '2}), and find that the data are inconsistent with the no-mixing hypothesis with a probability equivalent to 3.8 Gaussian standard deviations.

• OSTI ID: 21123779
• Journal Information: Physical Review Letters, Vol. 100, Issue 12; Other Information: DOI: 10.1103/PhysRevLett.100.121802; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BEAM LUMINOSITY
CABIBBO ANGLE
D NEUTRAL MESONS
FERMILAB COLLIDER DETECTOR
FERMILAB TEVATRON
KAONS MINUS
KAONS PLUS
PARTICLE DECAY
PIONS MINUS
PIONS PLUS
PROBABILITY
SIGNALS
TIME DEPENDENCE