Observation of Ξ(1620)0 and Evidence for Ξ(

K¯Λ molecular explanation to the newly observed Ξ(1620)0Chen1, Chen2, Sun3 et al. 2019Phys. Rev. D170151View full textAdd to dashboardCite

“…For example, the Λð1405Þ as aKN molecule with IðJ P Þ ¼ 0ð1=2 − Þ have been proposed [20,21]. Recently, Belle reported the observation of Ξð1620Þ [1] in the Ξ þ c → Ξ − π þ π þ process. If comparing the properties of the Ξð1620Þ and the Λð1405Þ, we may find their similarities, which inspires our interest to exam the possibility of the newly observed Ξð1620Þ as theKΛ molecular state.…”

“…respectively. Besides observing the Ξð1620Þ 0 signal, Belle also first reported the evidence of Ξð1690Þ 0 in the Ξ þ c → Ξ − π þ π þ process [1].…”

“…Recently, the Belle Collaboration [1] announced the observation of Ξð1620Þ 0 in the Ξ − c π þ invariant mass spectrum of the Ξ þ c → Ξ − π þ π þ process, which confirmed early experimental evidence of Ξð1620Þ existing in the K − p reaction in the 1970s [2][3][4]. The measured mass and width are M ¼ 1610.4 AE 6.0ðstatÞ þ5.9 −3.5 ðsystÞ MeV; Γ ¼ 59.9 AE 4.8ðstatÞ þ2.8 −3.0 ðsystÞ MeV;…”

Theoretical study of the Ω(2012) state in the Ωc0Zeng1, Lu2, Wang3 et al. 2020Phys. Rev. D16120View full textAdd to dashboardCite

“…The nonleptonic weak decays of charmed baryons can be useful tools to study hadron resonances [32][33][34][35][36][37][38][39]. The double strange baryon Ξ Ã ð1620Þ 0 was first observed in its decay mode to π þ Ξ − via Ξ þ c → π þ π þ Ξ − process, measured by the Belle collaboration [40]. In Ref.…”

Strange pentaquarks and excited Ξ- hyperons in Ξb-Karliner1, Rosner2 2021Science Bulletin6000View full textAdd to dashboardCite

“…[4]. It would be interesting for LHCb to examine the excited Ξ * 0 → Ξ − π + spectrum, as a state Ξ 0 (1620) reported by Belle [5] has a mass in some tension with quark model predictions, which are closer to 1690 MeV for J = 1/2 and either parity.…”