Search forΞ*production inK−pinteractions at 2.87 GeV/c

Cascade production in the reactionsγp→K+K+(X)andGuo1, Weygand2, Kubarovsky3 et al. 2007Phys. Rev. CSelf Cite

“…The reported mass, between 1600 and 1630 MeV/c 2 , seems to be too low for the second excited cascade resonance according to the constituent quark model [23]. Earlier evidence [24][25][26] has poor statistics. On the theoretical side, some dynamic models [27,28] have predicted a possible cascade resonance in the region of 1600 MeV/c 2 .…”

Analyzing $$\Xi (1620)$$ in the molecule picture in the Bethe–Salpeter equation approach

“…The Ξ(1620) was observed through the Ξ(1620) → Ξπ decay in the 1970's [3,4]. Although the mass and the width measurements in the two experiments are consistent, they both have large statistical uncertainties.…”

Spin, Parity, and Nature of theΞ(1620)Resonance

“…The value found for the mass of the state would suggest identification with the 1620. The experimental situation regarding this 1-star resonance is the following: Three experiments see the resonance in the spectrum in reactions where K ÿ p goes to three or four particles in the final state, including [25][26][27]. Taking into account the experimental errors of all experiments, the resonance mass is found in the range 1600-1640 MeV and the width in the range 15-50 MeV.…”