Theoretical Study Of The Hyperon Excited State ?(2012)

In 2018,the Belle collaboration reported a ?*state in the K? invariant mass distribution.The measured mass and width of the ?*state are M=2012.4±0.7 MeV and ?=6.4-2.0+2.5 ±1.6 MeV.And then they continue to measure the ratios of the branching fractions of the newly observed ?(2012),where they did not observe significant signals for the ?(2012)?K?*?K?? decay we revisit the ?(2012)state from the molecular perspective in which this resonance appears to be dynamically generated from the coupled channels interactions of the K?*(1530)and?? in s-wave and K? in d-wave.In such a scenario,the ?(2012)is interpreted as a 3/2-molecule state.We studied the two and three body strong decay of?(2012)within the model parameters for the d-wave interaction,it is shown that the experimental properties of the ?(2012)reported by the Belle collaboration can be easily accommodated.Furthermore we have investigated the nonleptonic weak decays of ?c??+?(2012)-?K?? as a tool to study the ?(2012)resonance via the final-state interactions of the K?*(1530)and ?? pairs.