We search and find no evidence for [Formula presented] violation in [Formula presented] decays into the [Formula presented] final state. We provide limits on the imaginary part of the coupling constant [Formula presented] describing a relative contribution of the [Formula presented] violating processes with respect to the standard model to be [Formula presented] at [Formula presented] C.L.

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Persistent URL dx.doi.org/10.1103/PhysRevLett.88.111803
Journal Physical Review Letters
Bonvicini, G. (G.), Cinabro, D. (D.), Dubrovin, M. (M.), McGee, S. (S.), Bornheim, A. (A.), Lipeles, E. (E.), … Xu, Z. (Z.). (2002). Search for [Formula presented] Violation in [Formula presented] Decays. Physical Review Letters, 88(11). doi:10.1103/PhysRevLett.88.111803