Abstract:In this work, the role of the ∆ * resonances in the process of pp → nK + Σ + are systematically investigated with the effective Lagrangian approach and the isobar model. We find that a P31 state, either ∆ * (1750) or ∆ * (1910), is favored by the data while the P33 state, namely ∆ * (1920), has small contribution. Besides, either sub-threshold S31 ∆ * (1620) resonance or strong nΣ final state interaction or both have possible contribution at near threshold region, depending on the measured cross sections. We d… Show more
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