Next-To-Leading Order Differential Cross-Sections for $J/\psi$, $\psi (2S)$ and ${\rm Y}$ Production in Proton-Proton Collisions at a Fixed-Target Experiment using the LHC Beams (AFTER@LHC)

Abstract

Using nonrelativistic QCD (NRQCD) factorization, we calculate the yields for $J/\psi$, $\psi (2S)$ and ${\rm Y}(1S)$ hadroproduction at $\sqrt{s}=$ 72 GeV and 115 GeV including the next-to-leading order QCD corrections. Both these center-of-mass energies correspond to those obtained with 7~TeV and 2.76~TeV nucleon beam impinging a fixed target. We study the cross section integrated in $p_t$ as a function of the rapidity as well as the $p_t$ differential cross section in the central rapidity region. Using different NLO fit results of the NRQCD long-distance matrix elements, we evaluate a theoretical uncertainty which is certainly much larger than the projected experimental uncertainties with the expected 20 fb${}^{-1}$ to be collected per year with AFTER@LHC.

12 pages, 14 figures

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• Energy Dependence of Direct-Quarkonium Production in pp Collisions from Fixed-Target to LHC Energies: Complete One-Loop Analysis

Cited by in corpus (2)

• Near Threshold Heavy Quarkonium Photoproduction at Large Momentum Transfer
• Heavy-ion Physics at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC): Feasibility Studies for Quarkonium and Drell-Yan Production