Improved Geometrical Scaling at the LHC

2011/01/31 by Michał Praszałowicz, Michal Praszalowicz · 46 citations
Physics and Astronomy · #Combinatorics #Condensed matter physics #Exponent #Geometry #High-Energy Particle Collisions Research #Lambda #Large Hadron Collider #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Saturation (graph theory) #Scaling #Scattering #Spectral line #hep-ph

paper · pdf · doi:10.1103/physrevlett.106.142002

published in Physical Review Letters 106(14), 142002 (American Physical Society) · 4 pages, 3 figures. In v2 a misprint concerning p_T dependence of lambda_eff corrected. In v3: small corrections, reference added, to appear in Physical Review Letters

arxiv created 2011/03/08 · openalex publication_date 2011/04/05 · arxiv updated 2015/03/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We show that geometrical scaling exhibited by the p_T spectra measured by the CMS Collaboration at the LHC is substantially improved if the exponent \ensuremathλ of the saturation scale depends on p_T. This dependence is shown to be the same as the dependence of small x exponent of F₂ structure function in deep inelastic scattering taken at the scale p_T\ensuremath≃Q/2.

Citations

• Manifestations of high density QCD in the first RHIC data
• Saturation effects in deep inelastic scattering at lowQ2and its implications on diffraction
• Modification of the saturation model: Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution
• Inclusive gluon production in deep inelastic scattering at high parton density