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Volume 332 - XIV International Conference on Heavy Quarks and Leptons (HQL2018) - CP Violation
New $CP$-violation effect in charm decays
H.n. Li,* F.S. Yu, D. Wang
*corresponding author
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Pre-published on: 2018 December 05
Published on: 2018 December 11
We find a new $CP$-violation effect in charm decays into neutral kaons, which results from the interference between two tree (Cabibbo-favored and doubly Cabibbo-suppressed) amplitudes with the mixing of final-state mesons. This effect, estimated to be of order of $10^{-3}$, is much larger than the direct $CP$ asymmetries in these decays, but missed in the literature. If confirmed, the new effect has to be taken into account, as the above direct $CP$ asymmetries are used to search for new physics.
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