Extracting the Distribution Amplitudes of the ρ meson from the Color Glass Condensate

2011/04/30 by J. R. Forshaw, Ruben Sandapen, R. Sandapen
Mathematics · Physics and Astronomy · #Amplitude #Color-glass condensate #Dipole #Distribution (mathematics) #Geometry #Gluon #HERA #High-Energy Particle Collisions Research #Lattice QCD #Mathematical analysis #Mathematics #Meson #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Sum rule in quantum mechanics #Twist #hep-ph

paper · pdf · doi:10.1007/jhep10(2011)093

published as JHEP10 (2011) 093 · 21 pages, 10 figures, 3 tables. Section 6 revised, figures 8 and 9 and table 3 updated. Conclusions essentially unchanged

openalex publication_date 2011/10/01 · arxiv created 2011/10/26 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We extract the leading twist-2 and subleading twist-3 Distribution Amplitudes (DAs) of the rho meson using the HERA data on diffractive rho photoproduction. We do so using several Colour Glass Condensate (CGC) inspired and a Regge inspired dipole models. We find that our extracted twist-2 DA is not much model dependent and is consistent with QCD Sum Rules and lattice predictions. The extracted twist-3 DA is more model dependent but is still consistent with the Sum Rules prediction.

Citations

• Wilson renormalization group for lowxphysics: Towards the high density regime
• Saturation and BFKL dynamics in the HERA data at small-x
• The BFKL equation from the Wilson renormalization group
• Unitarity at small Bjorken x
• Gluon Saturation in the Colour Dipole Model?
• Exclusive diffractive processes at HERA within the dipole picture
• Further success of the colour dipole model
• Modification of the saturation model: Dokshitzer-Gribov-Lipatov-Altarelli-Parisi evolution
• Constraining the rho meson wavefunction