6533b858fe1ef96bd12b58e7
RESEARCH PRODUCT
Exclusive heavy vector meson production at next-to-leading order in the dipole picture
Jani PenttalaJani PenttalaHeikki MäntysaariHeikki Mäntysaarisubject
QuarkNuclear and High Energy PhysicsParticle physicsCOLLISIONSProtonJ/PSI MESONSQC1-999High Energy Physics::LatticeNuclear TheoryStructure (category theory)FOS: Physical scienceshiukkasfysiikka7. Clean energy01 natural sciences114 Physical sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)High Energy Physics - Phenomenology (hep-ph)0103 physical sciencesInitial value problemVector meson010306 general physicsNUCLEUSPhysicsCoupling constantQuantum chromodynamicskvarkit010308 nuclear & particles physicsPhysicsHigh Energy Physics::PhenomenologyELECTROPRODUCTIONEVOLUTIONDipoleHigh Energy Physics - PhenomenologyPHOTOPRODUCTIONHigh Energy Physics::Experimentdescription
We calculate exclusive production of a longitudinally polarized heavy vector meson at next-to-leading order in the dipole picture. The large quark mass allows us to separately include both the first QCD correction proportional to the coupling constant $\alpha_s$, and the first relativistic correction suppressed by the quark velocity $v^2$. Both of these corrections are found to be numerically important in $\mathrm{J}/\psi$ production. The results obtained are directly suitable for phenomenological calculations. We also demonstrate how vector meson production provides complementary information to structure function analyses when one extracts the initial condition for the energy evolution of the proton small-$x$ structure.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-12-01 |