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-→η J /ψ and π0J /ψ . 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-→η J /ψ shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.

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 MEASUREMENT of the e+e- →ηJ /ψ ⋯ M. ABLIKIM et al

AMOROSO, Antonio;BIANCHI, Fabrizio;DESTEFANIS, MARCO GIOVANNI;DE MORI, FRANCESCA;GRECO, Michela;MAGGIORA, MARCO;MARCELLO, Simonetta;SOSIO, Stefano;SPATARO, STEFANO GIOVANNI;
2015-01-01

Abstract

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-→η J /ψ and π0J /ψ . 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-→η J /ψ shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.
2015
91
11
112005-11
112005-12
http://harvest.aps.org/bagit/articles/10.1103/PhysRevD.91.112005/apsxml
Nuclear and High Energy Physics
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.; Baldini Ferroli, R.; Ban, Y...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1574875
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