Abstract
An enhancement is observed in Λ 0π + effective mass in the reaction K − + p → Λ 0 + π + + π − at 6 GeV/ c. The lack of any large enhancements in other final states, as well as the shape and position of the peak, suggest that it is due to the new hyperon resonance, the Y 1 ∗ (1700), since it cannot be explained in terms of the known Y 1 ∗ (1660) and Y 1 ∗ (1765).
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