Study of the quasi-free $np\to np{\pi }^{+}{\pi }^{-}$ reaction with a deuterium beam at 1.25 GeV/nucleon

G. Agakishiev, A. Balanda, D. Belver +102

The tagged quasi-free $np\to np{\pi }^{+}{\pi }^{-}$ reaction has been studied experimentally with the High Acceptance Di-Electron Spectrometer (HADES) at GSI at a deuteron incident beam energy…