1998/11/10 by Han-Wen Huang
Physics and Astronomy · #Deep inelastic scattering #Distribution function #Factorization #Geometry #High-Energy Particle Collisions Research #Inelastic scattering #Jet (fluid) #Momentum (technical analysis) #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Perturbative QCD #Photon #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Quarkonium #Scattering #Twist #Weierstrass factorization theorem #hep-ph
paper · pdf · doi:10.1016/s0550-3213(98)00768-8
published as Nucl.Phys. B541 (1999) 267-286 · 23 pages LaTex (9 figures included), to appear in Nucl. Phys. B
arxiv created 1998/11/10 · openalex publication_date 1999/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In terms of multiple scattering picture, we calculate the double scattering effect in the transverse momentum distribution of J/ψ photoproduction. Applying the generalized factorization theorem, we find that the contributions from double scattering can be expressed in terms of twist-4 nuclear parton correlation functions, which is the same as that used to explain the nuclear dependence in di-jet momentum imbalance and in direct photon production. Using the known information on the twist-4 parton correlation functions, we estimate that the double scattering contributes a small suppression in J/ψ photoproduction. In the analysis we only take into account the leading order in the small velocity expansion for the nonperturbative parts related to the quarkonium.