Electromagnetic Decay of the ${\mathrm{\Sigma }}^0(1385)$ to $\mathrm{\Lambda }\gamma$

The electromagnetic decay ${\mathrm{\Sigma }}^0(1385)\to \mathrm{\Lambda }\gamma$ was studied using the CLAS detector at the Thomas Jefferson National Accelerator Facility. A real photon beam with a maximum energy of 3.8 GeV was incident on a proton target, producing an exclusive final state of $K^{+}{\mathrm{\Sigma }}^{\ast 0}$. We report the decay widths ratio ${\mathrm{\Sigma }}^0(1385)\to \mathrm{\Lambda }\gamma$/ $\Sigma^0(1385) \to \Lambda\pi^0$=$1.42 \pm 0.12($\text{stat}$)_{-0.07}^{+0.11}($\text{sys}$)$%. This ratio is larger than most theoretical predictions by factors ranging from 1.5-3, but is consistent with the only other experimental measurement. From the reported ratio we calculate the partial width and electromagnetic transition magnetic moment for ${\mathrm{\Sigma }}^0(1385)\to \mathrm{\Lambda }\gamma$.