Observation of $K^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^0\ddot{I}{€}^0{\hat{I}}^3$ decay

Abstract

The $K^{+}\to \ddot{I}{€}^{+}\ddot{I}{€}^0\ddot{I}{€}^0{\hat{I}}^3$ decay is observed by the OKA collaboration. The branching ratio is measured to be $(4.1\pm 0.9(stat)\pm 0.4(syst))\times 10^{-6}$. The branching ratio and ${\hat{I}}^3$ energy spectrum are consistent with ChPT prediction.

arXiv admin note: text overlap with arXiv:2310.16429