Fine structures of azimuthal correlations of two gluons in the glasma

2017/10/08 by Hengying Zhang, Donghai Zhang, Dong-Hai Zhang +8
Physics and Astronomy · #Azimuth #Combinatorics #Formalism (music) #Gluon #High-Energy Particle Collisions Research #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Saturation (graph theory) #Transverse plane #hep-ph

paper · pdf · doi:10.1103/physrevd.97.034003

published as Phys. Rev. D 97, 034003 (2018) · 7 pages, 4 figures

arxiv created 2017/10/08 · openalex publication_date 2018/02/05 · arxiv updated 2018/02/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We investigate the azimuthal correlations of the glasma in p-p collisions at √s_NN=7 TeV by using the color glass condensate (CGC) formalism. As expected, the azimuthal correlations show two peaks at \mathrm\ensuremathΔ\ensuremathφ=0 and \ensuremathπ, which represent collimation production in the CGC. Beyond that, azimuthal correlations show fine structures, i.e., bumps or shoulders between the two peaks, when at least one gluon has small x. The structures are demonstrated to be associated with saturation momentum and likely appear at transverse momentum around 2Q_sp=1.8 GeV/c.

Citations

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