Search for CP violation in τ → ππ0ντ decay

Journal article

We search for CP nonconservation in the decays of τ leptons produced via e+e- annihilation at √s ∼ 10.6 GeV. The method uses correlated decays of pairs of τ leptons, each decaying to the ππ0ντ final state. The search is done within the framework of a model with a scalar boson exchange. In an analysis of a data sample corresponding to 12.2×106 produced τ pairs collected with the CLEO detector, we find no evidence of violation of CP symmetry. We obtain a limit on the imaginary part of the coupling constant parametrizing the relative contribution of diagrams that would lead to CP violation to be -0.046

Authors: Avery, P; Prescott, C; Rubiera, A; Stoeck, H; Yelton, J

• Journal: Physical Review D
• Volume: 64
• Issue: 9
• Publication date: 2001-11-01
• DOI: 10.1103/physrevd.64.092005
• ISSN: 0556-2821
• Language: English