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    • Search for New π⁰-like Particles Produced in Association with a τ-lepton Pair 

      Lees, J. P.; Poireau, V.; Tisserand, V.; Grauges, E.; Palano, A.; Eigen, G.; Stugu, B.; Izen, Joseph M.; Lou, Xinchou; BaBar Collaboration (American Physical Society, 2014-12-23)
      We report on a search in e⁺e⁻ annihilations for new π⁰-like particles produced in association with a τ-lepton pair. These objects, with a similar mass and similar decay modes to π⁰ mesons, could provide an explanation for ...