arXiv subjects

Eliane Epple

Publications and source records attributed to Eliane Epple.

2 recordsLinked to original sources

arXiv2015

Has a "$ppK^{-}$" Signal in p+p Reactions been Observed Yet?

Our answer to the question posed in the title is: probably no. In this work we show that it is rather unlikely that the structure $X(2265)$ reported by the DISTO collaboration corresponds to a kaonic nuclear bound state. The main argumentation is based on the repetition of the DISTO analysis on the HADES data sample, containing p+p reactions at 3.5 GeV. We further discuss many aspects in connection with the $pK^{+}Λ$ final state and the $Λ(1405)$-resonance. The results evidence possible problematics in the interpretation of the DISTO data.

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arXiv2010

Measurement of the Lambda(1405) in proton proton reactions with HADES

We present an analysis of the Lambda(1405) resonance in p+p reactions at a kinetic beam energy of 3.5 GeV, measured by the High Acceptance Di-Electron Spectrometer (HADES). The resonance is reconstructed in the two charged decay channels Sigma^(+/-) pi^(-/+), with help of a kinematic refit, which improves the mass resolution. The high misidentification of pions and protons as kaons required the development of a sophisticated sideband analysis, which can describe the misidentification background quite well.

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