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| VOLUME 123 (2026) | ISSUE 4 | PAGE 239 |
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Linearly polarized gluon density at low x
N. A. Abdulov+, X. Chen*×, A. V. Kotikov+*, A. V. Lipatov°
+Joint Institute for Nuclear Research, 141980 Dubna, Russia *Institute of Modern Physics, Chinese Academy of Sciences, 730000 Lanzhou, China ×School of Nuclear Science and Technology, University of Chinese Academy of Sciences, 100049 Beijing, China °Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia
Abstract
Based on a solution of DGLAP evolution equations at small values of Bjorken variable x, a simple analytic approximation for the perturbative part of so-called linearly polarized gluon density  is obtained at the leading order
of perturbation theory.
We demonstrate that
derived expressions reproduce the main features of complicated numerical
calculations
performed by the parametrization groups.
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