The d*(2380) and its family of pion assisted dibaryons

Abstract

The status of $N\hat{I}”$ and $\hat{I}”\hat{I}”$ dibaryons introduced by Dyson and Xuong in 1964 is briefly reviewed with focus on the d*(2380), tentatively assigned as a $\hat{I}”\hat{I}”$ dibaryon resonance. It is argued that the apparently small value of width, $\hat{I}{“}_{d^{\ast }}$$\approx$70 MeV, favors hadronic structure for the d*(2380) dibaryon rather than a six-quark structure.

updated version of talks given at MESON 2018, Kraków [1], and at QNP 2018, Tsukuba [2]. arXiv admin note: substantial text overlap with arXiv:1803.08788