Helicity-dependent extension of the McLerran–Venugopalan model

2020/05/31 by Florian Cougoulic, Yuri V. Kovchegov · 1 citation
Mathematics · Physics and Astronomy · #Computer science #Extension (predicate logic) #Generalization #Helicity #High-Energy Particle Collisions Research #Mathematical analysis #Mathematical physics #Mathematics #Observable #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #hep-ex #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1016/j.nuclphysa.2020.122051

24 pages, 3 figures. v2 Typos and comments

openalex publication_date 2020/10/05 · arxiv created 2020/11/17 · arxiv updated 2020/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We construct a generalization of the McLerran-Venugopalan (MV) model including helicity effects for a longitudinally polarized target (a proton or a large nucleus). The extended MV model can serve as the initial condition for the helicity generalization of the JIMWLK evolution equation constructed in our previous paper, as well as for calculation of helicity-dependent observables in the quasi-classical approximation to QCD.

Citations

• Evolution at small x_bj: The Color Glass Condensate
• Wilson renormalization group for lowxphysics: Towards the high density regime
• Next-to-eikonal corrections in the CGC: gluon production and spin asymmetries in pA collisions
• Non-Abelian Weizsäcker-Williams field and a two-dimensional effective color charge density for a very large nucleus
• Asymptotic freedom in parton language
• Quantum structure of the non-Abelian Weizsäcker-Williams field for a very large nucleus
• Unitarity at small Bjorken x
• Quantum chromodynamics and other field theories on the light cone
• Polarized hyperons from pA scattering in the gluon saturation regime
• The Color Glass Condensate
• Single transverse-spin asymmetries in forward pion production at high energy: Incorporating small-xeffects in the target
• Quark-antiquark exchange in γ* γ* scattering

Cited by

• Weizsäcker-Williams Gluon Helicity Distribution and Inclusive Dijet Production in Longitudinally Polarized Electron-Proton Collisions