PoS - Proceedings of Science
Volume 284 - QCD Evolution 2016 (QCDEV2016) - Monday, May 30, 2016 - Afternoon 2
Resumming large collinear logarithms in the non-linear QCD evolution at high energy
E. Iancu
Full text: pdf
Pre-published on: February 10, 2017
Published on: March 28, 2017
The high-energy evolution in perturbative QCD suffers from a severe lack-of-convergence problem,
due to higher order corrections enhanced by double and single transverse logarithms. We resum double logarithms to all orders within the non-linear Balitsky-Kovchegov equation,
by taking into account successive soft gluon emissions strongly ordered in lifetime. We further resum single logarithms generated by the first non-singular part of the splitting functions and by the one-loop running of the coupling. The resummed BK equation admits stable solutions, which are used to successfully fit the HERA data at small x for physically acceptable initial conditions and reasonable values of the fit parameters.
DOI: https://doi.org/10.22323/1.284.0009
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