Electromagnetic Decay of the $$\Sigma^{0}(1385)$$ to $$\Lambda\gamma$$
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 $$\Sigma^0(1385) \to \Lambda\gamma$$.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- DOE Contract Number:
- AC05-06OR23177
- OSTI ID:
- 1014175
- Report Number(s):
- JLAB-PHY-11-1330; DOE/OR/23177-1561; arXiv:1103.5701; PRVDAQ; TRN: US1102609
- Journal Information:
- Phys. Rev. D, Vol. 83, Issue 07; ISSN 1550-7998
- Country of Publication:
- United States
- Language:
- English
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