Apr 8 – 12, 2024
Maison MINATEC, Grenoble, FRANCE
Europe/Paris timezone

One-loop QCD corrections to inclusive production of $J/\psi$ and $\Upsilon$ in $e^+e^-$ annihilation

Apr 9, 2024, 4:20 PM
Maison MINATEC, Grenoble, FRANCE

Maison MINATEC, Grenoble, FRANCE

3 Parv. Louis Néel, 38054 Grenoble
Regular parallel talk WG4: QCD with Heavy Flavors and Hadronic Final States WG4


Maxim Nefedov (IJClab, Orsay)


The impact of Next-to-Leading Order (NLO) QCD corrections to the differential distributions of $J/\psi$ and $\Upsilon$ mesons produced inclusively in $\gamma\gamma$ collisions is revisited for the kinematical conditions of LEPII DELPHI, the Circular Electron-Positron Collider (CEPC) and the Future Circular (Lepton) Collider (FCC-ee). We take into account all sizeable LO in $v^2$ contributions in NRQCD factorization: 1) pure QED process $\gamma + \gamma \rightarrow J/\psi({}^3S^{[1]}_1) + \gamma$ at NLO in $\alpha_s$, 2) single-resolved photon contribution at NLO in $\alpha_s$, 3) $\gamma+\gamma\to J/\psi + c\bar{c}$ in the LO in $\alpha_s$ and 4) $\gamma+\gamma\to J/\psi + ggg$ in the LO in $\alpha_s$.

Primary author

Maxim Nefedov (IJClab, Orsay)

Presentation materials