Branching fraction measurements of $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{cJ}$

Abstract

Using a sample of 106 million $\ddot{I}ˆ(3686)$ decays, the branching fractions of $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{c0},\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{c1}$, and $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{c2}$ are measured with improved precision to be $(9.389\pm 0.014\pm 0.332)\%$, $(9.905\pm 0.011\pm 0.353)\%$, and $(9.621\pm 0.013\pm 0.272)\%$, respectively, where the first uncertainties are statistical and the second ones are systematic. The product branching fractions of $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{c1},\ddot{I}{‡}_{c1}\to {\hat{I}}^{3}J/\ddot{I}ˆ$ and $\ddot{I}ˆ(3686)\to {\hat{I}}^3\ddot{I}{‡}_{c2},\ddot{I}{‡}_{c2}\to {\hat{I}}^{3}J/\ddot{I}ˆ$ and the branching fractions of $\ddot{I}{‡}_{c1}\to {\hat{I}}^{3}J/\ddot{I}ˆ$ and $\ddot{I}{‡}_{c2}\to {\hat{I}}^{3}J/\ddot{I}ˆ$ are also presented.

14 pages, 6 figures