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Mining for Gluon Saturation at Colliders

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arxiv 2108.08254 v1 pith:7NMCAQWU submitted 2021-08-18 hep-ph hep-exnucl-exnucl-th

Mining for Gluon Saturation at Colliders

classification hep-ph hep-exnucl-exnucl-th
keywords gluonhighgluonssaturationcollidersconstituentsenergiesenergy
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Quantum chromodynamics (QCD) is the theory of strong interactions of quarks and gluons collectively called partons, the basic constituents of all nuclear matter. Its non-abelian character manifests in nature in the form of two remarkable properties: color confinement and asymptotic freedom. At high energies, perturbation theory can result in the growth and dominance of very gluon densities at small-x. If left uncontrolled, this growth can result in gluons eternally growing violating a number of mathematical bounds. The resolution to this problem lies by balancing gluon emissions by recombinating gluons at high energies : phenomena of gluon saturation. High energy nuclear and particle physics experiments have spent the past decades quantifying the structure of protons and nuclei in terms of their fundamental constituents confirming predicted extraordinary behavior of matter at extreme density and pressure conditions. In the process they have also measured seemingly unexpected phenomena. We will give a state of the art review of the underlying theoretical and experimental tools and measurements pertinent to gluon saturation physics. We will argue for the need of high energy electron-proton/ion colliders such as the proposed EIC (USA) and LHeC (Europe) to consolidate our knowledge of QCD in the small x kinematic domains.

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Forward citations

Cited by 16 Pith papers

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    hep-ph 2026-04 accept novelty 6.5

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    hep-ph 2026-04 unverdicted novelty 6.0

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    hep-ph 2026-06 unverdicted novelty 5.0

    EMD-corrected LHC data enables a consistent CGC description of coherent and incoherent diffractive J/ψ production in γ+p and γ+Pb via Bayesian inference from combined HERA and LHC measurements.

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    Replacing the rapidity argument of the dipole amplitude with ln min{1/|x|, 1/|ξ|} and refining initial conditions for non-linear evolution can eliminate two R-factors in small-x shockwave calculations.

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