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etapi and eta'pi spectra and interpretation of possible exotic JPC=1-+ mesons
Adam P Szczepaniak1, Maciej Swat, Alex R Dzierba
1Physics Department and Nuclear Theory Center, Indiana University, Bloomington, IN 47405, USA.
Physical Review Letters
|October 4, 2003
Abstract:
We discuss a coupled channel analysis of the etapi and eta'pi systems produced in pi(-)p interactions at 18 GeV/c. We show that known Q(-)Q resonances, together with residual soft meson-meson rescattering, saturate the spectra including the exotic J(PC)=1(-+) channel. The possibility of a narrow exotic resonance at a mass near 1.6 GeV/c(2) cannot, however, be ruled out.