Study of the process e+e− → 3(π+π−)π0 in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

R.R Akhmetshin,A.E Kuzmenko,D.N Shemyakin,A.V Bragin,L.B Epshteyn,A.L Erofeev,F.V Ignatov,A.V Otboev,G.P Razuvaev,V.S Okhapkin,A.A Grebenuk,N.M Ryskulov,A.E Ryzhenenkov,S.E Gayazov,V.Sh Banzarov,A.N Amirkhanov,S.S Gribanov,I.B Logashenko,D.N Grigoriev,N.S Bashtovoy,Aleksei Kozyrev ,P Yu Shatunov ,A Bondar ,А.і Воробйов ,E A Kozyrev ,D Epifanov ,I M Zemlyansky ,A N Kirpotin ,A I Senchenko ,K Mikhailov ,S V Karpov ,S Eidelman ,V Aulchenko ,Yu M Shatunov ,P Krokovny ,A Sibidanov ,E P Solodov ,A Kuzmin ,Y Pestov ,Yu A Rogovsky ,A V Anisenkov ,V Shebalin ,A A Talyshev ,P Lukin ,D E Berkaev ,B Shwartz ,В Ф Казанин ,А.а Рубан ,A Korobov ,D B Shwartz ,В Л Иванов ,Г В Федотович ,I A Koop ,В.м Титов ,А С Попов ,Yu V Yudin

doi:10.1016/j.physletb.2019.04.007

Study of the process e+e− → 3(π+π−)π0 in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

R.R Akhmetshin, A.E Kuzmenko + Show 54 more

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https://doi.org/10.1016/j.physletb.2019.04.007

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Journal: Physics Letters B	Publication Date: Apr 9, 2019
Citations: 7	License type: cc-by

Affiliation: Budker Institute of Nuclear Physics, Novosibirsk State University, Siberian Branch of the Russian Academy of Sciences, Novosibirsk State Technical University, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

#CMD-3 Detector #Energy Range + Show 5 more

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Abstract

The cross section of the process e+e−→3(π+π−)π0 has been measured for the first time using a data sample of 56.7 pb−1 collected with the CMD-3 detector at the VEPP-2000 e+e− collider. 632±32 signal events have been selected in the center-of-mass energy range 1.6–2.0 GeV. A study of dynamics of seven-pion production allows one to extract contributions of the dominated 2(π+π−)ω and 2(π+π−)η intermediate states.

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