https://doi.org/10.1140/epja/s10050-024-01255-0
Regular Article - Theoretical Physics
The unintegrated gluon distribution from the GBW and BGK models
Department of Physics, Razi University, 67149, Kermanshah, Iran
Received:
17
November
2023
Accepted:
23
January
2024
Published online:
5
March
2024
The gluon distribution is obtained from the Golec-Biernat–W
sthoff (GBW) and Bartels, Golec-Biernat, and Kowalski (BGK) models at low x. We derive analytical results for the unintegrated color dipole gluon distribution function at small transverse momentum, which provides useful information to constrain the 
-shape of the unintegrated gluon distribution in comparison with the unintegrated gluon distribution (UGD) models. The longitudinal proton structure function 
from the factorization scheme, using the unintegrated gluon density, is computed. We compare the predictions for the on-shell and twist-2 corrections with the HERA data and the CJ15 parameterization method for 
. We show that this method describes very well the experimental data within the on-shell and twist-2 framework. Effects of parameters on , where charm contribution is taken into account, are investigated. These results are in good agreement with the data at fixed W.
An erratum to this article is available online at https://doi.org/10.1140/epja/s10050-024-01355-x.
An erratum to this article is available online at https://doi.org/10.1140/epja/s10050-024-01363-x.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
