%0 Conference Paper
%A Surovtsev, Yu. S.
%A Bydzovsky, P.
%A Gutsche, T.
%A Kaminski, R.
%A Lyubovitskij, V. E.
%A Nagy, M.
%T The interference effects of multi-channel pion-pion scattering in final states of charmonia and bottomonia decays
%N DESY-PROC-2016-04
%C Hamburg
%I Verlag Deutsches Elektronen-Synchrotron
%M PUBDB-2017-06838
%M DESY-PROC-2016-04
%@ 978-3-945931-07-3
%B DESY-PROC
%P 286-296
%D 2017
%< Surovtsev, Yu. S. "The interference effects of multi-channel pion-pion scattering in final states of charmonia and bottomonia decays" in Proceedings of the Helmholtz International Summer School 2016 (HQ 2016) : Quantum Field Theory at the Limits : from Strong Fields to Heavy Quarks / Ali, Ahmed, Blaschke, David, Issadykov, Aidos, Ivanov, Mikhail (eds.), Verlag Deutsches Elektronen-Synchrotron : 2017 ; HQ 2016 : Helmholtz International Summer School 2016, 2016-07-18 - 2016-07-30, Dubna
%X There is presented a unified analysis of all available data on the decays Υ(mS)→Υ(nS)ππ (m > n, m=2,3,4,5, n=1,2,3), J/ψ→ϕ(ππ, K―K), and ψ(2S)→ J/ψππ and the data on isoscalar S-wave processes ππ→ππ,K―K,ηη. The multi-channel ππ scattering is described in our model-independent approach based on analyticity and unitarity and using an uniformization procedure. It is shown that the basic shape of dipion mass distributions in the two-pion transitions of both charmonia and bottomonia states are explained by an unified mechanism based on the contribution of the ππ, K―K and ηη coupled channels including their interference.
%B Quantum Field Theory at the Limits
%C 18 Jul 2016 - 30 Jul 2016, Dubna (Russia)
Y2 18 Jul 2016 - 30 Jul 2016
M2 Dubna, Russia
%F PUB:(DE-HGF)29 ; PUB:(DE-HGF)8 ; PUB:(DE-HGF)7
%9 ReportContribution to a conference proceedingsContribution to a book
%R 10.3204/DESY-PROC-2016-04/Surovtsev
%U https://bib-pubdb1.desy.de/record/330339