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

BESIII Collaboration

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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-→ηJ/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-→ηJ/ψ shows an enhancement around 4.2 GeV. The measurement is compatible with an earlier measurement by Belle.

Lingua originaleInglese
Numero di articolo112005
RivistaPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume91
Numero di pubblicazione11
DOI
Stato di pubblicazionePubblicato - 9 giu 2015
Pubblicato esternamente

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