Measurement of the Born cross sections for e+e- →η′π+π- At center-of-mass energies between 2.00 and 3.08 GeV

The BESIII Collaboration

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

The Born cross sections for the process e+e-→η′π+π- at different center-of-mass energies between 2.00 and 3.08 GeV are reported with improved precision from an analysis of data samples collected with the BESIII detector operating at the BEPCII storage ring. An obvious structure is observed in the Born cross section line shape. Fit as a Breit-Wigner resonance, it has a statistical significance of 6.3σ and a mass and width of M=(2111±43±25) MeV/c2 and Γ=(135±34±30) MeV, where the uncertainties are statistical and systematic, respectively. These measured resonance parameters agree with the measurements of BABAR in e+e-→η′π+π- and BESIII in e+e-→ωπ0 within two standard deviations.

Язык оригиналаанглийский
Номер статьи072007
ЖурналPhysical Review D
Том103
Номер выпуска7
DOI
СостояниеОпубликовано - 27 апр 2021

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