Reanalysis of the newly observed Ω state in a hadronic molecule model

After the recent discovery of the new Ω* state, the ratio of the branching fractions of Ω(2012) → K πΞ relative to the KΞ decay channel was investigated by the Belle Collaboration. The measured 11.9% upper limit to this ratio is in sharp tension with the S-wave KΞ(1530) molecule interpretation for Ω(2012), which indicates the dominant K πΞ three-body decay. We try to explore the possibility of the P-wave molecule assignments for Ω(2012) [where Ω(2012) has positive parity]. It is found that the latest experimental measurements are compatible with the 1/2+ and 3/2+ KΞ(1530) molecular pictures, while the 5=2+ KΞ(1530) molecule shows larger K πΞ three-body decay than KΞ decay as in the case of an S-wave molecule. Thus, the newly observed Ω(2012) can be interpreted as the 1/2+ or 3/2+ KΞ(1530) molecule state according to current experiment data.