Dalitz plot analysis of the decay ω →π+π-π0

Date Issued
01-12-2018
Author(s)
Ablikim, M.
Achasov, M. N.
Ahmed, S.
Albrecht, M.
Alekseev, M.
Amoroso, A.
An, F. F.
An, Q.
Bai, Y.
Bakina, O.
Ferroli, R. Baldini
Ban, Y.
Begzsuren, K.
Bennett, D. W.
Bennett, J. V.
Berger, N.
Bertani, M.
Bettoni, D.
Bianchi, F.
Boger, E.
Boyko, I.
Briere, R. A.
Cai, H.
Cai, X.
Calcaterra, A.
Cao, G. F.
Cetin, S. A.
Chai, J.
Chang, J. F.
Chang, W. L.
Chelkov, G.
Chen, G.
Chen, H. S.
Chen, J. C.
Chen, M. L.
Chen, P. L.
Chen, S. J.
Chen, X. R.
Chen, Y. B.
Cheng, W.
Chu, X. K.
Cibinetto, G.
Cossio, F.
Dai, H. L.
Dai, J. P.
Dbeyssi, A.
Dedovich, D.
Deng, Z. Y.
Denig, A.
Denysenko, I.
Destefanis, M.
De Mori, F.
Ding, Y.
Dong, C.
Dong, J.
Dong, L. Y.
Dong, M. Y.
Dou, Z. L.
Du, S. X.
Duan, P. F.
Fang, J.
Fang, S. S.
Fang, Y.
Farinelli, R.
Fava, L.
Feldbauer, F.
Felici, G.
Feng, C. Q.
Fritsch, M.
Fu, C. D.
Gao, Q.
Gao, X. L.
Gao, Y.
Gao, Y. G.
Gao, Z.
Garillon, B.
Garzia, I.
Gilman, A.
Goetzen, K.
Gong, L.
Gong, W. X.
Gradl, W.
Greco, M.
Gu, L. M.
Gu, M. H.
Gu, Y. T.
Guo, A. Q.
Guo, L. B.
Guo, R. P.
Guo, Y. P.
Guskov, A.
Haddadi, Z.
Han, S.
Hao, X. Q.
Harris, F. A.
He, K. L.
He, X. Q.
Heinsius, F. H.
Held, T.
Heng, Y. K.
DOI
Abstract
Using a low-background sample of 2.6×105 J/ψ→ωη(ω→π+π-π0,η→γγ) events, about 5 times larger statistics than previous experiments, we present a Dalitz plot analysis of the decay ω→π+π-π0. It is found that the Dalitz plot distribution differs from the pure P-wave phase space with a statistical significance of 18.9σ. The parameters from the fit to data are in reasonable agreement with those without the cross-channel effect within the dispersive framework, which indicates that the cross-channel effect in ω→π+π-π0 is not significant.
Volume
98