NLO NRQCD predictions for exclusive J/psi pair and eta_c pair production in ultraperipheral Pb-Pb and p-p collisions at HL-LHC and FCC energies, plus Low-formula estimates for the X(6900) state.
NLO QCD corrections to the $B_c$-pair hadroproduction
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abstract
The $B_c$ meson pair, including pairs of pseudoscalar states and vector states, productions in proton-proton collisions are investigated at the next-to-leading order (NLO) accuracy in the nonrelativistic quantum chromodynamics factorization formalism. The corresponding cross sections at the Large Hadron Collider (LHC) with $\sqrt{s}=14\; \text{TeV}$ are evaluated. Numerical results indicate that the NLO corrections are substantial, and even dominate over the leading order contributions. Considering the predicted cross sections are sizable, the $B_c$-pair production is expected to be observable at the High-Luminosity LHC experiment.
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Charmonium pair production in ultraperipheral collision
NLO NRQCD predictions for exclusive J/psi pair and eta_c pair production in ultraperipheral Pb-Pb and p-p collisions at HL-LHC and FCC energies, plus Low-formula estimates for the X(6900) state.