QCD at high parton density

Gonçalves, V. P.

doi:10.1590/s0103-97332004000700018

Cited by 5 publications

(3 citation statements)

References 43 publications

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“…Several works have been made along these lines, studying the behavior of the observables in the kinematic region of the planned eA colliders at HERA and RHIC (For recent reviews see, e.g., Refs. [24,25]). In particular, recently we have analyzed the nuclear exclusive vector meson production considering two distinct theoretical scenarios [26].…”

Section: Introductionmentioning

confidence: 99%

The QCD pomeron in ultraperipheral heavy ion collisions: IV. Photonuclear production of vector mesons

2005

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The photonuclear production of vector mesons in ultraperipheral heavy ion collisions is investigated within the QCD color dipole picture, with particular emphasis on the saturation model. The integrated cross section and the rapidity distribution for the AA → V AA (V = ρ, ω, φ, J/Ψ) process are computed and theoretical estimates for scattering on both light and heavy nuclei are given for energies of RHIC and LHC. A comparison with the recent STAR data on coherent production of ρ mesons is also presented. Furthermore, we calculate the photoproduction of vector mesons in proton-proton collisions at RHIC, Tevatron and LHC energies.Recently, the STAR Collaboration released the first data on the cross section of the coherent ρ production in gold -gold ultraperipheral collisions at √ s = 130 GeV [27], providing the first opportunity to check the basic features and main approximations of the distinct approaches describing nuclear vector meson photoproduction. The main aspect is that real photons have

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Section: Introductionmentioning

confidence: 99%

The QCD pomeron in ultraperipheral heavy ion collisions: IV. Photonuclear production of vector mesons

2005

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“…With the absence of information about the connection of the temperature with the collision energy s available in the scattering, one adopts the simple identification s ∝ T 2 . That assumption is based on the deep inelastic electronproton scattering produced in the high parton density regime, where the Bjorken variable can be defined as x = Q 2 /s [73]. Thus, one can write…”

Section: A Debye Length In the Uv Domainmentioning

confidence: 99%

The Debye length and the running coupling of QCD: A potential and phenomenological approach

Campos

2021

Int. J. Mod. Phys. A

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In this paper, one uses a damped potential to present a description of the running coupling constant of QCD in the confinement phase. Based on a phenomenological perspective for the Debye screening length, one compares the running coupling obtained here with both the Brodsky–de Téramond–Deur and the Richardson approaches. The results seem to indicate the model introduced here corroborate the Richardson approach. Moreover, the Debye screening mass in the confinement phase depends on a small parameter, which tends to vanish in the nonconfinement phase of QCD.

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“…In the parallel talk on dynamics of dense partonic systems, Victor Gonçalves, from UFPel, evolved through the theoretical and phenomenological issues concerning high density QCD [2], like saturation, and their relation with the interface between perturbative and non-perturbative QCD. It was discussed how it relates with non-linear dynamics expressed in the parton evolution equations GLR, AGL, and BK [3]: this is not closed subject, and several related issues to provide information on initial conditions where addressed in the above plenary talk.…”

Section: Plenary and Parallel Talksmentioning

confidence: 99%