Is the color-octet mechanism consistent with the double J/ψ production measurement at B-factories?

Double J/psi production in e(+) e(-) collisions involving color-octet channels are evaluated up to order alpha(2)alpha(3)(s). Having implemented the variation of the parameters (m(c), mu(r) and long-distance matrix elements), we found that the cross sections for producing double J/psi at B-factories range from -0.016 to 0.245 fb, which are even much smaller than that via the color-singlet mechanism. Accordingly, this result is consistent with the measurement by the Belle and BABAR Collaborations.