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arXiv · 1411.7774

Twist decomposition of proton structure from BFKL and BK amplitudes

Leszek Motyka·Mariusz Sadzikowski
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Abstract

An analysis of twist composition of Balitsky-Kovchegov (BK) amplitude is performed in the double logarithmic limit. In this limit the BK evolution of color dipole -- proton scattering is equivalent to BFKL evolution which follows from vanishing of the Bartels vertex in the collinear limit. We perform twist decomposition of the BFKL/BK amplitude for proton structure functions and find compact analytic expressions that provide accurate approximations for higher twist amplitudes. The BFKL/BK higher twist amplitudes are much smaller than those following from eikonal saturation models.

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Leszek Motyka, Mariusz Sadzikowski. 2014-11-28. Twist decomposition of proton structure from BFKL and BK amplitudes. https://doi.org/10.5506/aphyspolb.45.2079

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