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

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Abstract

We extract the twist-2 and twist-3 Distribution Amplitudes (DAs) of the ρ meson using the HERA data on diffractive ρ 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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Authors and Affiliations

  1. School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.

    J. R. Forshaw

  2. Département de Physique et d’Astronomie, Université de Moncton, Moncton, N-B. E1A 3E9, Canada

    R. Sandapen

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  1. J. R. Forshaw
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  2. R. Sandapen
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Correspondence to R. Sandapen.

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Forshaw, J.R., Sandapen, R. Extracting the Distribution Amplitudes of the ρ meson from the Color Glass Condensate. J. High Energ. Phys. 2011, 93 (2011). https://doi.org/10.1007/JHEP10(2011)093

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