Abstract
We have studied the diffractive production of mesons with natural and unnatural parity at high energy. Partial wave analyses of the Kr and KK systems give evidence for Jp = 4+ mesons with masses near 2.06 and 2.00 GeV, respectively. The Breit–Wigner behavior of the resonant phases is clearly seen in the data. Evidence for unnatural parity states comes from a partial wave analysis of the Lp system. We find three broad states with JP = 2−, 3+ and 4− and masses 2.26, 2.32 and 2.49 GeV, respectively. An interpretation in terms of resonances is consistent with the data.
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