The electromagnetic decay Sigma^0(1385)-> 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)->Lambda-Gamma/Sigma^0(1385)->Lambda-Pion^0. 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)->Lambda-Gamma.
Electromagnetic decay of the Sigma^0(1385) to Lambda-gamma
CONTALBRIGO, Marco;PAPPALARDO, Luciano Libero;
2011
Abstract
The electromagnetic decay Sigma^0(1385)-> 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)->Lambda-Gamma/Sigma^0(1385)->Lambda-Pion^0. 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)->Lambda-Gamma.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.