Observation of the decay ψ(3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ and measurement of its angular distribution
Observation of the decay ψ(3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ and measurement of its angular distribution
A bstract Using (448 . 1 ± 2 . 9) × 10 6 ψ (3686) events collected with the BESIII detector at the BEPCII collider, the decay ψ (3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mi>Σ</mml:mi> <mml:mo>−</mml:mo> </mml:msup> <mml:msup> <mml:mover> <mml:mi>Σ</mml:mi> <mml:mo>¯</mml:mo> </mml:mover> <mml:mo>+</mml:mo> </mml:msup> </mml:math> is observed for …