Cross section measurement of e(+) e(-) -> eta ' J/psi from root S=4.178 to 4.600 GeV
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Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Alekseev, M., . . . Collaboration, B. (2020). Cross section measurement of e(+) e(-) -> eta ' J/psi from root S=4.178 to 4.600 GeV. Physical Review D, 101(1), 9. doi:10.1103/PhysRevD.101.012008Abstract
The cross section of the process e(+) e(-) -> eta ' J/ psi is measured at center-of-mass (c.m.) energies from root S = 4.178 to 4.600 GeV using data samples corresponding to a total integrated luminosity of 11 fb(-1) collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on root S shows an enhancement around 4.2 GeV. While the shape of the cross section cannot be fully explained with a single psi(4160) or psi(4260) state, a coherent sum of the two states does provide a reasonable description of the data.
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Physical Review D.Volume
101Issue
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