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[en] Five different methods for searches of mixing and CP violation in the D0 - D(bar sign)0 system are presented and different experimental result are shown. The results are consistent with no mixing and no CP violation
Journal
[en] Four different methods for searches of mixing and CP violation in the D0-D-bar 0 system are presented. For each of them the experimental result with currently best sensitivity to mixing parameters is shown. The results are consistent with no mixing and no CP violation. A proposal for future D0 mixing search with coherent D0D-bar 0 pairs is described
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[en] Recent measurements of D0-D-bar0 mixing parameters and measurements searching for CP violation in D0 decays are presented.
Journal
[en] We analyze ΔC=2 transitions in the framework of a minimal extension of the standard model where either a Q=2/3 or a Q=-1/3 isosinglet quark is added to the standard quark spectrum. In the case of a Q=2/3 isosinglet quark, it is shown that there is a significant region of parameter space where D0-bar D0 mixing is sufficiently enhanced to be observed at the next round of experiments. On the contrary, in the case of a Q=-1/3 isosinglet quark, it is pointed out that obtaining a substantial enhancement of D0-bar D0 mixing, while complying with the experimental constraints on rare kaon decays, requires a contrived choice of parameters
Journal
[en] It is pointed out that the internal structure of the narrow resonance X(3872) at the D0D-bar*0 threshold can be studied in some detail by measuring the rate and the spectra in the decays X(3872)→D0D-bar0π0 and X(3872)→D0D-bar0γ. In particular, if this resonance contains a dominant 'molecular' component DD*-bar±D-barD*, this component can be revealed and studied by a distinct pattern of interference between the underlying decays of D*0 and D-bar*0 whose coherence is ensured by fixed (but yet unknown) C parity of the X(3872)
Journal
[en] Motivated by the first experimental evidence of meson oscillations in the D system, we study D0-D-bar0 mixing in the Littlest Higgs model with T-parity. We investigate its role in constraining the model parameters and its impact on the most interesting flavour observables. We find that the experimental data are potentially strongly constraining but at present limited by large theoretical uncertainties in the long-distance Standard Model contribution to D0-D-bar0 mixing
Journal
[en] In order to understand the structure of the X(3872) the effects of the cc¯ charmonium core state coupling to the D0D-bar*0 and D+D*- molecule states are studied. The obtained structure of the X(3872) is about 9 % of cc¯ charmonium, 75 % of the isoscalar DD-bar molecule and 16 % of the isovector DD-bar molecule which explains observed properties of the X(3872) well. (author)
Journal
[en] Using 2.7 fb-1 of data taken with the CLEO II detector, we have searched for CP violation in the charm system. We looked for asymmetries in the number of decays of D0's and bar D0's to the CP eigenstates K+K-, KS0φ, and KS0π0. Confidence intervals (90%) on these asymmetries were found to be -0.020< AKK<0.180, -0.182< AKS0φ<0.126, and -0.067< AKS0π0<0.031, respectively
Journal
[en] We discuss the impact of matter effects in the D0-ovr D0 system. We show that such effects could, in principle, be measured, but that they cannot be used to probe the mass difference xD or the lifetime difference yD. This occurs because the mixing effects and the matter effects decouple at short times. We also comment briefly on the B systems
Journal
No abstract available
Journal
Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195; 
; CODEN VDPEAZ; (Muenchen 2009 issue); [1 p.]
; CODEN VDPEAZ; (Muenchen 2009 issue); [1 p.]
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