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$η$ meson reconstruction in pp reactions at 2.2 GeV with HADES

S. Spataro
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Abstract

The HADES spectrometer installed at GSI Darmstadt is devoted to study the production of di-electron pairs from proton, pion and nucleus induced reactions at 1-2 AGeV. In pp collisions at 2.2 GeV we have focused mainly on exclusive reconstruction of the $η$ meson decays in the hadronic ($η\toπ^{+}π^{-}π^{0}$) and the electromagnetic channels ($η\to e^{+}e^{-}γ$). We present analysis techniques and discuss first results on $η$ production, with the main focus on comparisons of reconstructed distributions to results obtained by other experiments and theoretical predictions.

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S. Spataro. 2006-10-12. $η$ meson reconstruction in pp reactions at 2.2 GeV with HADES. https://doi.org/10.1142/s0217751x0703577x

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