[Phi Decays WG Home]
Plots from PLB 541 (2002) 45
Fig. 1 : Data - MC comparison for the energy spectrum of photons in events selected as phi->eta gamma ->pi+ pi- 3 gammas
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Fig. 2 : Event density distributions in the E1-E2 plane: MC for eta' gamma events
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Fig. 3 : Event density distributions in the E1-E2 plane: MC for eta gamma events
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Fig. 4 : Event density distributions in the E1-E2 plane: Experimental data after first level selection; events in the eta gamma bands have been downscaled for clarity. The number of observed events inside the ellipse is 175
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Fig. 5 : The pi+ pi- gamma gamma invariant mass for events selected as phi->eta' gamma candidates. The shaded areas represent signal (shape from MC) and background (shape from sidebands analysis of data). The continuous line is the result of a Gaussian plus linear fit.
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Fig. 6: Bounds on X_eta' and Y_eta' from SU(3) calculations and experimental branching fractions. The horizontal band is the KLOE result in the assumption Z_eta' = 0
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15 July 2002
F.A.
