Photon impact factor and $k_T$-factorization for DIS in the
next-to-leading order [PDF]
Ian Balitsky, Giovanni A. ChirilliThe photon impact factor for the BFKL pomeron is calculated in the next-to-leading order (NLO) approximation using the operator expansion in Wilson lines. The result is represented as a NLO $k_T$-factorization formula for the structure functions of small-$x$ deep inelastic scattering.View original: http://arxiv.org/abs/1207.3844
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