d∗(2380) in a chiral constituent quark model

Dibaryons and where to find them

“…In contrast the d * (2380) has a very large binding energy, which unavoidably means it should have a large | 6q〉 component even if one considers it from a molecular picture. Moreover, the majority of theoretical papers in different ansatz suggest that the d * (2380) might indeed be a genuine hexaquark-dominated object [42,44,45]. Its evidence in photoproduction (e.g.…”

Observation of a resonant structure in e+e− → ωη and another in e+e− → ωπ0 at center-of-mass energies between 2.00 and 3.08 GeV

“…The study of hadronic states with six quarks, either compact hexaquark states or dibaryon states, has a long history [11][12][13][14][15][16]. Among them the d * (2380) has attracted substantial attention [17]. The d * (2380), with a mass of about 2380 MeV and a width of about 70 MeV, was first observed in the isoscalar double-pionic fusion process pn → dπ 0 π 0 [18], and was later confirmed in other double-pionic fusion processes pn → dπ + π − [19] and pp → dπ + π 0 [20], and non-fusion processes pn → ppπ 0 π − [21] and pn → pnπ 0 π 0 [22].…”