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

Details Extracting the Distribution Amplitudes of the rho meson from the Color Glass Condensate Extracting the Distribution Amplitudes of the rho meson from the Color Glass Condensate

2011-04-25

arxiv.org/abs/1104.4753v2

JHEP10 (2011) 093

Physics

High Energy Physics

High Energy Physics - Phenomenology

21 pages, 10 figures, 3 tables. Section 6 revised, figures 8 and 9 and table 3 updated. Conclusions essentially unchanged

Scientific paper

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.

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