Abstract
A partial wave analysis of the K 0π +π − system produced in the charge exchange reaction K − p → ( K 0π +π −) n at 4.2 GeV/ c has been performed both as a function of Kππ mass and of t′. The 1 +S wave forms the largest contribution to the K ππ system and peaks at roughly the same mass as the Q in diffractive K ππ production. The polarization properties of the 1 + S ( K ∗π) and 1 +S (Kϱ) waves differ fromt those of the diffractive 1 + wave. There is some evidence for a resonance contribution to 1 + S( K ∗π) . The strong 2 + wave the K ∗(1420) and the Kϱ/ K ∗ϱ decay branching ratio determined to be 0.36±0.10. An enhancement with spin-parity 1 − is observed under K ∗ (1420) .
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