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Exclusive heavy vector meson photoproduction in hadronic collisions at the LHC: predictions of the Color Glass Condensate model for Run 2 energies
High Energy Physics - Phenomenology · Submitted 19 Dec 2016
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Our results demonstrate that the current data can be quite well described by the bCGC model, which takes into account nonlinear effects in the QCD dynamics and reproduces the very precise HERA data, without introducing any additional effect or free parameter.
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The abstract, sentence by sentence
In this letter we update our predictions for exclusive $J/\Psi$ and $\Upsilon$ photoproduction in proton-proton and nucleus - nucleus collisions at the Run 2 LHC energies obtained with the color dipole formalism and considering the impact parameter Color Glass Condensate model (bCGC) for the forward dipole - target scattering amplitude. A comparison with the LHCb data on rapidity distributions and photon - hadron cross sections is presented. Our results demonstrate that the current data can be quite well described by the bCGC model, which takes into account nonlinear effects in the QCD dynamics and reproduces the very precise HERA data, without introducing any additional effect or free parameter.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | In this letter we update our predictions for exclusive $J/\Psi$ and $\Upsilon$ photoproduction in proton-proton and nucleus - nucleus collisions at the Run 2 LHC energies obtained with the color dipole formalism and considering the impact parameter Color Glass Condensate model (bCGC) for the forward dipole - target scattering amplitude. | contribution 0.96 | 0.88 | 0.06 | asserted 0.77 |
| s1 | A comparison with the LHCb data on rapidity distributions and photon - hadron cross sections is presented. | contribution 0.69 | 0.77 | 0.03 | asserted 0.76 |
| s2 | Our results demonstrate that the current data can be quite well described by the bCGC model, which takes into account nonlinear effects in the QCD dynamics and reproduces the very precise HERA data, without introducing any additional effect or free parameter. | result 0.68 | 0.89 | 0.92 | asserted 0.99 |
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The paper
Original abstract
In this letter we update our predictions for exclusive $J/\Psi$ and $\Upsilon$ photoproduction in proton-proton and nucleus - nucleus collisions at the Run 2 LHC energies obtained with the color dipole formalism and considering the impact parameter Color Glass Condensate model (bCGC) for the forward dipole - target scattering amplitude. A comparison with the LHCb data on rapidity distributions and photon - hadron cross sections is presented. Our results demonstrate that the current data can be quite well described by the bCGC model, which takes into account nonlinear effects in the QCD dynamics and reproduces the very precise HERA data, without introducing any additional effect or free parameter.
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References
How the literature uses it
4 arXiv papers cite this in 10 sentences
Papers citing it · 5 sentences without a confident label
Uses its method or tool 1 paper
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As in Refs. [ref] , in what follows we will consider the Boosted Gaussian model [ref] for the overlap function and the impact parameter Color Glass Condensate (bCGC) model [ref] for the dipole – proton scattering amplitude $N^p$.
Investigating the impact of the gluon saturation effects on the momentum transfer distributions for the exclusive vector meson photoproduction in hadronic collisions · Formalism · 0.93
Compares with it 1 paper
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The CMS measurements are compared to the following theoretical predictions: * The JMRT model [ref] , a pQCD approach that uses standard (collinear) PDFs with a skewness factor to approximate GPDs, including LO and NLO corrections, and a gap survival factor to account for the exclusive production; * The factorized impact parameter saturation model, fIPsat, with an eikonalized gluon distribution function that uses the colour glass condensate (CGC) formalism to incorporate gluon saturation at low $x$ [ref] ; * the Iancu, Itakura and Munier (IIM) colour dipole formalism [ref] with two sets of meson wave functions, boosted Gaussian (BG) and light-cone Gaussian (LCG), which also incorporate saturation effects [ref] ; * the impact parameter CGC model (bCGC), which takes into account the $t$-dependence of the differential cross section, using the BG wave function [ref] .
Measurement of exclusive $\Upsilon$ photoproduction from protons in pPb collisions at $\sqrt{s_\mathrm{NN}} =$ 5.02 TeV · Extraction of cross sections · 0.93
What it cites
Cites as background 1 paper
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One these questions is related to the treatment of the QCD dynamics at high energies and large nuclei [ref] , which is probed in exclusive vector meson photoproduction in hadronic collisions [ref] .
The Color Glass Condensate and High Energy Scattering in QCD · Introduction · 0.97
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