Evidence for D0-D0bar mixing using the CDF II Detector

Abstract

We measure the time dependence of the ratio of decay rates for the rare decay D0->K+pi- to the Cabibbo-favored decay D0->K-pi+. We use a signal of 12.7 x10^3 D0->K+pi decays with proper decay times between 0.75 and 10 mean D0 lifetimes. The data sample was recorded with the CDF II detector at the Fermilab Tevatron and corresponds to an integrated luminosity of 1.5 fb-1 of p-pbar collisions at sqrt(s) = 1.96 TeV. We search for D0-D0bar mixing and measure the mixing parameters to be Rd = (3.04 +/- 0.55) x10^{-3}, y' = (8.5 +/- 7.6) x10^{-3}, and x'^2 = (-0.12 +/- 0.35) x10^{-3}. We report Bayesian probability contours in the x'^2-y' plane and find that the data are inconsistent with the no-mixing hypothesis with a probability equivalent to 3.8 Gaussian standard deviations.

7 pages, 4 figures, submitted to Phys. Rev. Lett

References in corpus (15)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• Measurement of the J/Psi Meson and b-Hadron Production Cross Sections in ppbar Collisions at sqrt s = 1960 GeV
• Observation of Bs-Bsbar Oscillations
• Evidence for D0-anti-D0 Mixing
• Implications of D^0-\bar D^0 Mixing for New Physics
• The $D^0-{\bar{D}}^0$ mass difference from a dispersion relation
• $D^0-\overline{D^0}$ Mixing and Rare Charm Decays
• Search for D0-D0B Mixing
• New Physics contributions to the lifetime difference in D0-anti-D0 mixing
• Improved Constraints on D0-D0bar Mixing in D0 -> K+ pi- Decays from the Belle Detector
• The Role of CP violation in D0 anti-D0 Mixing
• Short Distance Analysis of D^0-anti-D^0 Mixing
• U-Spin Symmetry in Doubly Cabibbo-Suppressed Charmed Meson Decays
• Measurement of the Ratio of Branching Fractions B(D0 -> K+ pi-)/B(D0 -> K- pi+) using the CDF II Detector

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