Probing u-bar/d-bar Asymmetry in the Proton via Quarkonium Production

J. C. Peng, D. M. Jansen, Y. C. Chen

The sensitivity of proton-induced $J/\psi$ and ${\rm Y}$ production to the possible $\bar{u}/\bar{d}$ asymmetry in the nucleon is studied. The ratio of the quarkonium production cross section…