Pion-assisted $N\Delta$ and $\Delta \Delta$ dibaryons, and beyond

Abstract

Experimental evidence for $I(J^P)=0(3^{+})$ $\Delta \Delta$ dibaryon ${\mathcal{D}}_{03}(2370)$ has been presented recently by the WASA-at-COSY Collaboration. Here I review new hadronic-basis Faddeev calculations of $L=0$ nonstrange pion-assisted $N\Delta$ and $\Delta \Delta$ dibaryon candidates. These calculations are so far the only ones to reproduce the relatively small ${\mathcal{D}}_{03}(2370)$ width of 70--80 MeV. Predictions are also given for the location and width of ${\mathcal{D}}_{30}$, the $I(J^P)=3(0^{+})$ exotic partner of ${\mathcal{D}}_{03}(2370)$. Extensions to strangeness $\mathcal{S}=-1$ dibaryons are briefly discussed.

8 pages, invited talk at the International Conference on Exotic Atoms and Related Topics - EXA2014, Vienna, Austria, Sept. 15-19, 2014; v2 matching published version

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Cited by in corpus (1)

• Fully coupled-channel study of $K^{-}pp$ resonance in a chiral SU(3)-based $\bar{K}N$ potential