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

Abstract : 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 $\Sigma^0(1385) \to \Lambda\gamma$.
Document type :
Journal articles
Domain :

http://hal.in2p3.fr/in2p3-00588013
Contributor : Emmanuelle Vernay <>
Submitted on : Friday, April 22, 2011 - 9:53:30 AM
Last modification on : Friday, November 27, 2020 - 5:52:10 AM

### Citation

D. Keller, K. Hicks, K.P. Adhikari, D. Adikaram, M. Aghasyan, et al.. Electromagnetic Decay of the $\Sigma^{0}(1385)$ to $\Lambda\gamma$. Physical Review D, American Physical Society, 2011, 83, pp.072004. ⟨10.1103/PhysRevD.83.072004⟩. ⟨in2p3-00588013⟩

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