Azimuthal asymmetries of back-to-back ${\pi }^{\pm }-({\pi }^0,\eta ,{\pi }^{\pm })$ pairs in $e^{+}{e}^{-}$ annihilation

Belle Collaboration, H. Li, A. Vossen +126

This work reports the first observation of azimuthal asymmetries around the thrust axis in $e^{+}{e}^{-}$ annihilation of pairs of back-to-back charged pions in one hemisphere, and ${\pi }^0$…