Observation of $J/\psi \to p\bar{p}{a}_0(980)$ at BESIII

M. Ablikim, M. N. Achasov, X. C. Ai +389

Using $2.25\times 10^8$ $J/\psi$ events collected with the BESIII detector at the BEPCII storage rings, we observe for the first time the process $J/\psi \to p\bar{p}{a}_0(980)$,…