Abstract
We present the first complete study of and prompt J/ψ production from single-parton scattering, including the complete O(αS6) color-singlet contribution, the O(αS2α2) electroweak contribution, and the complete nonrelativistic S-wave and P-wave color-octet contribution as well as the feeddown contribution. Our study was motivated by the recent evidence reported by the D0 Collaboration of prompt J/ψ and simultaneous production at the Tevatron. With our complete evaluation, we are able to refine the determination of the double-parton scattering contribution made by the D0 Collaboration. We find that the effective cross section characterizing the importance of double-parton scatterings is σeff≤8.2 mb at 68% confidence level from the D0 measurement.
| Original language | English |
|---|---|
| Article number | 062001 |
| Journal | Physical Review Letters |
| Volume | 117 |
| Issue number | 6 |
| DOIs | |
| State | Published - 5 Aug 2016 |
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