Search for Dibaryon Resonances in the Reactions dd → ddππ and pd → pdππ

Abstract

The isoscalar dibaryon resonance \({{D}_{{03}}}(2380)\), discovered at WASA@COSY in the total cross section of the reaction \(pn \to d{{\pi }^{0}}{{\pi }^{0}}\) and in the elastic pn scattering in the energy range corresponding to the invariant mass of the pn system of 2380 MeV, can reveal itself in the \(pd \to pd\pi \pi \) and \(dd \to dd\pi \pi \) reactions at higher energies due to deuteron excitation in the \(t\) channel. In this paper, the cross sections of these reactions are estimated based on the model of the reaction \(pn \to d{{\pi }^{0}}{{\pi }^{0}}\), proposed earlier by Platonova and Kukulin.