Study of the process [formula omitted] in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

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

doi:10.1016/j.physletb.2022.137606

Study of the process [formula omitted] in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

R.R Akhmetshin, P Yu Shatunov + Show 58 more

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https://doi.org/10.1016/j.physletb.2022.137606

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Journal: Physics Letters B	Publication Date: Dec 1, 2022
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, INFN Sezione di Lecce, P.N. Lebedev Physical Institute of the Russian Academy of Sciences

#CMD-3 Detector #Intermediate State + Show 8 more

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Abstract

A cross section of the process e+e−→KS0K±π∓π+π− has been measured for the first time using a data sample of 185.4 pb−1 collected with the CMD-3 detector at the VEPP-2000 e+e− collider. With the KS0→π+π− decay detection, 373±20 and 514±28 signal events have been selected with six and five reconstructed tracks, respectively, in the center-of-mass energy range 1.6–2.0 GeV. The total systematic uncertainty of the cross section is about 15%. A study of the production dynamics allows us to extract a contribution from the e+e−→f1(1285)π+π− intermediate state and to measure the corresponding cross section. The intermediate states with the f1(1420) and f1(1510) resonances have been observed.

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