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Measurement of the e+e- → ηJ/ψ cross section and search for e+e- → π0J/ψ at center-of-mass energies between 3.810 and 4.600 GeV

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Akademik Birimler

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Tapan, İlhan

Yazarlar

Ablikim, M.
Achasov, M. N.
Ai, X. C.
Albayrak, O.
Albrecht, M.
Ambrose, D. J.
Amoroso, A.
An, F. F.
An, Q.
Bai, J. Z.

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Amer Physical Soc

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Using data samples collected with the BESIII detector operating at the BEPCII collider at 17 center-of-mass energies from 3.810 to 4.600 GeV, we perform a study of e(+)e(-) -> eta J/psi and pi(0)J/psi The Born cross sections of these two processes are measured at each center-of-mass energy. The measured energy-dependent Born cross section for e(+)e(-) -> eta J/psi shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.

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Decay, Science & technology, Physical sciences, Astronomy & astrophysics, Physics, particles & fields, Physics

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