A measurement of π-
n at 22 GeV/c and a systematic study of the 2++
A coupled channel analysis has been carried out using a new amplitude analysis of the K0sK0s system produced in the reaction π-p→K0sK0sn at 22 GeV/c, which contained about 40 000 new events in the low-t region (|t-tmin|<0.1 GeV2). Here only the IG=0+, JPC=2++ amplitude from this analysis is considered, together with available data from other experiments in channels with the same quantum numbers in order to determine which 2++ isoscalar mesons have significant pseudoscalar-pseudoscalar couplings. It is found that four poles, f(1270), f'(1525), θ(1690), and fr(1810), are needed, plus a smooth background in order to fit these data; the need for the θ(1690) depends on the J/ψ radiative decay alone, and the fr(1810) is seen only in hadronic production. © 1986.
Longacre, RS; Etkin, A; Foley, KJ; Love, WA; Morris, TW; Saulys, AC; Platner, ED; Lindenbaum, SJ; Bensinger, JR; Kirsch, LE; Piekarz, H; Poster, RA; Goo, J; Kramer, MA; Fortney, LR; Goshaw, AT; McCrory, E; Robertson, WJ; Bishop, JM; Biswas, NN; Cason, NM; Kenney, VP; Piekarz, J; Rath, MG; Ruchti, RC; Shephard, WD
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