| EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH 15 September 1997 (2007) | |||||||||||||
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| The decay ¯ pp (at rest)! K ffi L K \Sigma ß \Upsilon ß ffi , studied on a sample of more than 14000 events, is found to proceed dominantly via two-body channels containing resonances with open strangeness. Contributions from K 1 (1270) ¯ K and K 1 (1400) ¯ K , branching into the successive K 1 -decay modes, and from K ¯ K ; K ( ¯ Kß) S and (Kß) S ( ¯ Kß) S are extracted by means of a partial-wave analysis which accounts well for the data and also allows a search for weak contributions from other (Kßß) and from (K ¯ Kß) resonances. Striking asymmetries between the charged and the neutral kaonic resonances give evidence for interfering isospin 0 and 1 annihilation amplitudes. Kaonic annihilation channels of protonium have been a profitable source of meson spectroscopy since the early bubble chamber work [1]. The K ¯ Kßß channels give access to resonances in the open-strangeness (Kßß) and (Kß) and in the hidden-strangeness (K ¯ K) and (K ¯ Kß) systems. A peculi... | |||||||||||||
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