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Chiral quark model analysis of the K ¯ N interaction

Abstract:

In this work we analyze the K̄N interaction in the framework of a constituent quark model. The near-threshold elastic and charge-exchange cross sections are evaluated, finding a good agreement with the experimental data. Furthermore, the possible existence of K̄N bound states are explored, finding two poles in the isoscalar JP=12- sector that can be interpreted as the experimental Λ(1405) state.