Paper
QCD corrections to $\bm{e^+ e^- \to J/ψg g}$ at B Factories
Authors
Abstract
In heavy quarkonium production, the measured ratio at B factories is much larger than existing theoretical predictions. To clarify this discrepancy, in nonrelativistic QCD (NRQCD) we find the next-to-leading-order (NLO) QCD correction to can enhance the cross section by about 20%. Together with the calculated NLO result for , we show that the NLO corrections can significantly improve the fit to the ratio . The effects of leading logarithm resummation near the end point on the momentum distribution and total cross section are also considered. Comparison of the calculated cross section for with observed cross section for is expected to provide unique information on the issue of color-octet contributions.