A PARTIAL WAVE ANALYSIS OF THE K PI PI SYSTEM PRODUCED IN THE REACTION K- P ---> ANTI-K0 PI+ PI- N AT 8.25-GeV/c

Abstract A partial-wave analysis of the K 0 π + π − system from the reaction K − p → K 0 π + π − n has been carried out using data obtained at 8.25 GeV/ c in a high-statistics experiment. A strong signal appears in the 1 + SO + (K ∗ π) wave at the Q 2 mass (≈ 1.4 GeV). The 1 + S0 + (ϱK) wave behaves rather like a background and does not exhibit the characteristics of a resonance. A prominent signal also appears in the 2 + D wave (via K ∗ π and ϱK); it is interpreted as the K ∗ (1430). In the L region (1.6–2.1) GeV, there is evidence for the 3 − K ∗ (1780) while the 2 − wave also gives some contribution. A strong signal shows up in the 1 − P0−(K ∗ π) wave around 1.47 GeV; it does not seem to be due to a resonance. The 0 − S0 + (κπ) wave gives a large contribution in the 1–2 GeV region, but it cannot be identified with the resonating 0 − S 0 + (e K ) or 0 − P 0 + ( K ∗ π) waves observed in diffractive channels.