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

Xiao-Gang He·German Valencia
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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.

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Xiao-Gang He, German Valencia. 2007-06-05. $D-\bar{D}$ mixing constraints on FCNC with a non-universal $Z^\prime$. https://doi.org/10.1016/j.physletb.2007.06.007

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