Study of the process e+e→KS0K±ππ+π in the c.m. energy range 1.6–2.0 GeV with the CMD-3 detector

CMD-3 Collaboration

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

A cross section of the process e+e→KS0K±ππ+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.

Язык оригиналаанглийский
Номер статьи137606
ЖурналPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Том836
DOI
СостояниеОпубликовано - 10 янв. 2023

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ

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