Using 1.6 fb−1 of e+ e− → φ → ηγ data collected with the KLOE detector at DAΦNE, the Dalitz plot distribution for the η → π+ π− π0 decay is studied with the world’s largest sample of ∼ 4.7 · 10^6 events. The Dalitz plot density is parametrized as a polynomial expansion up to cubic terms in the normalized dimensionless variables X and Y . The experiment is sensitive to all charge conjugation conserving terms of the expansion, including a gX2Y term. The statistical uncertainty of all parameters is improved by a factor two with respect to earlier measurements.

Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., et al. (2016). Precision measurement of the η → π+ π- π0 Dalitz plot distribution with the KLOE detector. JOURNAL OF HIGH ENERGY PHYSICS(5) [10.1007/JHEP05(2016)019].

Precision measurement of the η → π+ π- π0 Dalitz plot distribution with the KLOE detector

Fantini A.;Loffredo S.;Mascolo M.;Messi R.;Sarra I.;
2016-05-03

Abstract

Using 1.6 fb−1 of e+ e− → φ → ηγ data collected with the KLOE detector at DAΦNE, the Dalitz plot distribution for the η → π+ π− π0 decay is studied with the world’s largest sample of ∼ 4.7 · 10^6 events. The Dalitz plot density is parametrized as a polynomial expansion up to cubic terms in the normalized dimensionless variables X and Y . The experiment is sensitive to all charge conjugation conserving terms of the expansion, including a gX2Y term. The statistical uncertainty of all parameters is improved by a factor two with respect to earlier measurements.
3-mag-2016
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/01 - FISICA SPERIMENTALE
English
e+-e- Experiments; QCD
Anastasi, A., Babusci, D., Bencivenni, G., Berlowski, M., Bloise, C., Bossi, F., et al. (2016). Precision measurement of the η → π+ π- π0 Dalitz plot distribution with the KLOE detector. JOURNAL OF HIGH ENERGY PHYSICS(5) [10.1007/JHEP05(2016)019].
Anastasi, A; Babusci, D; Bencivenni, G; Berlowski, M; Bloise, C; Bossi, F; Branchini, P; Budano, A; Caldeira Balkestahl, L; Cao, B; Ceradini, F; Ciamb...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/265812
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