From Color Glass to Color Dipoles in high-energy onium--onium scattering

Abstract

Within the Color Glass formalism, we construct the wavefunction of a high energy onium in the BFKL and large-N_c approximations, and demonstrate the equivalence with the corresponding result in the Color Dipole picture. We propose a simple factorization formula for the elastic scattering between two non-saturated ``color glasses'' in the center-of-mass frame. This is valid up to energies which are high enough to allow for a study of the onset of unitarization via multiple pomeron exchanges. When applied to the high energy onium-onium scattering, this formula reduces to the Glauber-like scattering between two systems of dipoles, in complete agreement with the dipole picture.

35 pages, 2 figures

References in corpus (2)

• Rare fluctuations and the high-energy limit of the S-matrix in QCD
• A Gaussian effective theory for gluon saturation

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