Chiral dynamics in the pp → dK+K̅0 and pp → dπ+ η reactions

Abstract

We perform a study of the final-state interactions of the K + \({\bar K^0}\) and the \({\bar K^0}\) d systems in the reactions pp → dK + \({\bar K^0}\) and pp → dπ+ η. The interactions of the mesons are accounted for by using chiral unitary techniques, which generate dynamically the a 0(980)-resonance, and the \({\bar K^0}\) d interaction is also taken into account. The amount of π+ η versus K + \({\bar K^0}\) production is shown to depend critically on the primary mixture of the two mechanisms, with large interference effects due to final-state interactions