We report a preliminary measurement of the slope parameter α for the η → 3 π0 decay carried out with KLOE at DAPdblNE; where α is the parameter describing the energy dependence of the square of the matrix element for this decay. By fitting the event density in the Dalitz plot with a collected statistic of 420 pb-1 we determine α =-0.027 ± 0.004 (stat) +0.004-0.006 (syst). This result is consistent with current chiral perturbation theory calculations within the unitary approach.
Measurement of the slope parameter α for the η → 3 π0 decay at KLOE
Martini M;Meola S;
2007-01-01
Abstract
We report a preliminary measurement of the slope parameter α for the η → 3 π0 decay carried out with KLOE at DAPdblNE; where α is the parameter describing the energy dependence of the square of the matrix element for this decay. By fitting the event density in the Dalitz plot with a collected statistic of 420 pb-1 we determine α =-0.027 ± 0.004 (stat) +0.004-0.006 (syst). This result is consistent with current chiral perturbation theory calculations within the unitary approach.File in questo prodotto:
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