A new precision measurement of the Xi^0 mass has been performed at the NA48 experiment at the CERN SPS. The value obtained is [1314.82 +- 0.06 (stat.) +- 0.2 (syst.)] MeV/c^2. The branching ratios of Xi^0 radiative decays have been measured as: Br(Xi^0 --> Lambda gamma) = [1.90 +- 0.34 (stat.) +- 0.19 (syst.)] * 10^-3 and Br(Xi^0 --> Sigma^0 gamma) = [3.14 +- 0.76 (stat.) +- 0.32 (syst.)] * 10^-3.
Precision measurement of the Xi(0) mass and the branching ratios of the decays Xi(0) -> Lambda gamma and Xi(0) -> Sigma(0)gamma
CONTALBRIGO, Marco;DALPIAZ, Pietro;MARTINI, Mara;PETRUCCI, Ferruccio Carlo;SAVRIE', Mauro;
2000
Abstract
A new precision measurement of the Xi^0 mass has been performed at the NA48 experiment at the CERN SPS. The value obtained is [1314.82 +- 0.06 (stat.) +- 0.2 (syst.)] MeV/c^2. The branching ratios of Xi^0 radiative decays have been measured as: Br(Xi^0 --> Lambda gamma) = [1.90 +- 0.34 (stat.) +- 0.19 (syst.)] * 10^-3 and Br(Xi^0 --> Sigma^0 gamma) = [3.14 +- 0.76 (stat.) +- 0.32 (syst.)] * 10^-3.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
