Determination of the $\mathbf{\Sigma }(1385{)}^0/\Lambda (1405)$ ratio in p+p collisions at 3.5 GeV

Abstract

The aim of the present analysis is to determine the relative production cross sections of the $\Lambda$(1405) and $\Sigma (1385{)}^0$ resonances in p+p collisions at E${}_{kin}$=3.5 GeV measured with HADES. Upper and lower limits have been determined for the ratio ${\sigma }_{(\Sigma (1385{)}^0+p+K^{+})}/{\sigma }_{(\Lambda (1405)+p+K^{+})}=0.76_{-0.26}^{+0.54}$. The knowledge of this ratio is an essential input for the analysis of the decay $\Lambda (1405)\to {\Sigma }^{\pm }{\pi }^{\mp }$, where an unambiguous separation of the $\Lambda$(1405) and $\Sigma (1385{)}^0$ signals is not possible.

References in corpus (2)

• Lineshape of the Lambda(1405) Hyperon Measured Through its Sigma0 pion0 Decay
• Baryonic resonances close to the Kbar-N threshold: the case of Sigma(1385)^+ in pp collisions

Cited by in corpus (7)

• Coupled-channel dynamics in the reactions piN --> piN, etaN, KLambda, KSigma
• Baryonic resonances close to the Kbar-N threshold: the case of Lambda(1405) in pp collisions
• Has a "$pp{K}^{-}$" Signal in p+p Reactions been Observed Yet?
• Faddeev-Chiral Unitary Approach to the $K^{-}d$ scattering length
• Investigation of the Lambda(1405) line shape observed in pp collisions
• Production of Sigma{\pm}pi?pK+ in p+p reactions at 3.5 GeV beam energy
• $\Lambda (1405)$ observations in p+p and K${}^{-}$-induced reactions