$D-\bar{D}$ mixing constraints on FCNC with a non-universal $Z^{\prime }$

Abstract

The BaBar and Belle collaborations have recently reported evidence for $D^0-{\bar{D}}^0$ mixing. This measurement provides the first significant constraint on FCNC in the up-quark sector for non-universal $Z^{\prime }$ models. Attributing the observed $D-\bar{D}$ mixing to new physics, we comment on the resulting rare $D$ and $t$ decays. We also show that a CP violating semileptonic asymmetry as large as $\sim 30$ is allowed by the experimental results.

arXiv commentRevTex, 10 pages, 1 figure. Several typoes corrected

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• D-Dbar Mixing in the Standard Model and Beyond from Nf=2 Twisted Mass QCD
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• Ansatz for small FCNC with a non-universal $Z^{\prime }$
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• Charm Physics - A Field Full with Challenges and Opportunities
• Flavor changing Z' couplings at the LHC
• Impact of colored scalars on $D^0-{\bar{D}}^0$ mixing in diquark models
• Implication of the D^0 Width Difference On CP-Violation in D^0-\bar D^0 Mixing
• Spontaneous CP Violating Phase as The CKM Matrix Phase
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