We present a measurement of the slope parameter α for the decay, with the KLOE experiment at the DAΦNE ϕ-factory, based on a background free sample of ∼17 million η mesons produced in ϕ radiative decays. By fitting the event density in the Dalitz plot we determine . The result is in agreement with recent measurements from hadro- and photo-production experiments.
Measurement of the $eta o 3pi^{0}$ slope parameter $alpha$ with the KLOE detector / Ambrosino, Fabio; DI DONATO, Camilla; Massarotti, Paolo; Napolitano, Marco; Kloe, Collaboration. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 694:(2010), pp. 16-21. [10.1016/j.physletb.2010.09.022]
Measurement of the $eta o 3pi^{0}$ slope parameter $alpha$ with the KLOE detector
AMBROSINO, FABIO
;DI DONATO, CAMILLA;MASSAROTTI, PAOLO;NAPOLITANO, MARCO;
2010
Abstract
We present a measurement of the slope parameter α for the decay, with the KLOE experiment at the DAΦNE ϕ-factory, based on a background free sample of ∼17 million η mesons produced in ϕ radiative decays. By fitting the event density in the Dalitz plot we determine . The result is in agreement with recent measurements from hadro- and photo-production experiments.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
