A Measurement of Lifetime Difference in $D^0$ Meson Decays

Abstract

We report a measurement of the $D^0$-$\bar{D}{}^0$ mixing parameter $y_{CP}$ using 23.4 fb${}^{-1}$ of data collected near the ${\rm Y}$(4S) resonance with the Belle detector at KEKB. $y_{CP}$ is measured from the lifetime difference of $D^0$ mesons decaying into the $K^{-}{\pi }^{+}$ state and the CP even eigenstate $K^{-}{K}^{+}$. We find $y_{CP}=(-0.5\pm 1.0{}_{-0.8}^{+0.7})\times 10^{-2}$, where the first error is statistical and the second systematic, corresponding to a 95% confidence interval $-0.030<y_{CP}<0.020$.

10 pages, 3 figures

References in corpus (4)

• D^0 - D^0-bar Oscillations as a Probe of Quark-Hadron Duality
• Lessons from CLEO and FOCUS Measurements of D0-anti-D0 Mixing Parameters
• Search for D0-D0B Mixing
• A measurement of lifetime differences in the neutral D-meson system

Cited by in corpus (22)

• Model-independent constraints on Delta F=2 operators and the scale of New Physics
• The Physics of the B Factories
• The $D^0-{\bar{D}}^0$ mass difference from a dispersion relation
• $D^0-\overline{D^0}$ Mixing and Rare Charm Decays
• B, D and K decays
• Charm System Tests of CPT and Lorentz Invariance with FOCUS
• D-Dbar mixing and new physics: general considerations and constraints on the MSSM
• Time-Independent Measurements of D0-D0bar Mixing and Relative Strong Phases Using Quantum Correlations
• Search for D^0 - barD^0 Mixing in the Dalitz Plot Analysis of D^0 --> K_S^0 pi^+ pi^-
• On $SU(3{)}_F$ Breaking through Final State Interactions and CP Asymmetries in $D\to PP$ Decays
• Determination of the D0 -> K+pi- Relative Strong Phase Using Quantum-Correlated Measurements in e+e- -> D0 D0bar at CLEO
• Short Distance Analysis of D^0-anti-D^0 Mixing
• Search for D0D0bar Mixing and a Measurement of the Doubly Cabibbo-suppressed Decay Rate in D0 -> K pi Decays
• Limits on D0-D0bar Mixing and CP Violation from the Ratio of Lifetimes for Decay to K-pi+, K-K+, and pi-pi+
• Interpreting experimental bounds on D^0 - \bar{D^0} mixing in the presence of CP violation
• The UTfit Collaboration Average of D meson mixing data: Spring 2012
• Experimental limits on New Physics from charm decay
• Measurements of D0-D0bar Mixing and Searches for CP Violation: HFAG Combination of all Data
• Mixing in the D0 system - Results from collider experiments
• Charm Lifetimes and Mixing
• A Cicerone for the physics of charm, Part I: production, spectroscopy, lifetimes
• HFAG Charm Mixing Averages