AI Article Synopsis
- The CDF and LHCb experiments have reported signs of potential new physics through unusual asymmetries in top quark production and charm decays.
- These findings suggest that there may be flavor nonuniversal interactions in the up sector that could link the two phenomena to a common source.
- A minimal theoretical model involving an additional scalar doublet has been shown to naturally account for the observed CP violation in charm decays without needing any changes.
Article Abstract
The CDF and LHCb experiments have recently provided two intriguing hints for new physics: a large forward-backward asymmetry in tt[over ¯] production and a direct CP asymmetry in D decays of order of a percent. In both cases, flavor nonuniversal interactions are required in the up sector, raising the possibility that the two effects come from one and the same new physics source. We show that a minimal model, with an extra scalar doublet, previously suggested to explain the top data, gives-without any modifications or additions-a contribution to CP violation in charm decays that is of the right size.
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| http://dx.doi.org/10.1103/PhysRevLett.108.261601 | DOI Listing |
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