Electromagnetic Decay of the $Σ^{0}(1385)$ to $Λγ$

Details Electromagnetic Decay of the $Σ^{0}(1385)$ to $Λγ$ Electromagnetic Decay of the $Σ^{0}(1385)$ to $Λγ$

2011-03-29

arxiv.org/abs/1103.5701v1

Phys.Rev.D83:072004,2011

Physics

Nuclear Physics

Nuclear Experiment

Scientific paper

10.1103/PhysRevD.83.072004

The electromagnetic decay $\Sigma^0(1385) \to \Lambda \gamma$ 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 $K^+\Sigma^{*0}$. We report the decay widths ratio $\Sigma^0(1385) \to \Lambda\gamma$/ $\Sigma^0(1385) \to \Lambda\pi^0$ = $1.42 \pm 0.12(\text{stat})_{-0.07}^{+0.11}(\text{sys})$%. 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 $\Sigma^0(1385) \to \Lambda\gamma$.

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