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 / Ambrosino, F.; Corvino, M.; Massarotti, P.; Mirra, M.; Napolitano, M.; Saracino, G.. - (2007). (Intervento presentato al convegno 23rd International Symposium on Lepton-Photon Interactions at High Energy, LP 2007 tenutosi a Daegu, kor nel 2007).
Measurement of the slope parameter α for the η → 3 π0 decay at KLOE
Ambrosino F.;Corvino M.;Massarotti P.;Napolitano M.;Saracino G.
2007
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
