Abstract
The cross sections of the processes e+e-→K+K-J/ψ and KS0KS0J/ψ are measured via initial state radiation at center-of-mass energies between the threshold and 6.0 GeV using a data sample of 980fb-1 collected with the Belle detector on or near the Υ(nS) resonances, where n=1,2,...,5. The cross sections for e+e-→K+K-J/ψ are at a few pb level and the average cross section for e+e-→KS0KS0J/ψ is 1.8±0.6(stat)±0.3(syst)pb between 4.4 and 5.2 GeV. All of them are consistent with previously published results with improved precision. A search for resonant structures and associated intermediate states in the cross section of the process e+e-→K+K-J/ψ is performed.
| Original language | English |
|---|---|
| Article number | 072015 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 89 |
| Issue number | 7 |
| DOIs | |
| State | Published - 23 Apr 2014 |
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