The strange meson resonances observed in the reaction [formula omitted] at GeV/ c

• Published in: Nuclear physics. B 1987, Vol.292, p.693-713
• Main Authors: Aston, D., Awaji, N., D'Amore, J., Dunwoodie, W., Endorf, R., Fujii, K., Hayashii, H., Iwata, S., Johnson, W.B., Kajikawa, R., Kunz, P., Leith, D.W.G.S., Levinson, L., Matsui, T., Meadows, B.T., Miyamoto, A., Nussbaum, M., Ozaki, H., Pak, C.O., Ratcliff, B.N., Schultz, D., Shapiro, S., Shimomura, T., Sinervo, P.K., Sugiyama, A., Suzuki, S., Tarnopolsky, G., Tauchi, T., Toge, N., Ukai, K., Waite, A., Williams, S.
• Format: Article
• Language: English
• ISSN: 0550-3213; 1873-1562
• DOI: 10.1016/0550-3213(87)90665-1

A model incorporating K ∗ resonance contributions and simple backgrounds is shown to quantitatively reproduce the mass dependence of the partial wave amplitudes governing the production and decay of the K 0π +π − system. A fit of this model to these amplitudes confirms the resonance interpretations of the well-established 1 + K 1(1400), the 2 + K 2 ∗(1430), the 3 − K 3 ∗(1780), and the less well-known 1 − states, the K ∗(1410) and the K ∗(1790). The 4 + amplitudes are shown to be consistent with the production and decay of the 4 + K 4 ∗(2060). A second 2 + enhancement at a mass of ∼ 1.95 GeV/ c 2 can be interpreted as resonant and may be the radial excitation of the K 2 ∗(1430) or the triplet partner of the K 4 ∗(2060). New measurements of the masses, widths and branching ratios of these states are given, and the implications of these data for the spectroscopy of the non-strange meson sector are discussed.