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arXiv · 2210.16084

Sudakov effects and the dipole amplitude

Tomoki Goda·Krzysztof Kutak·Sebastian Sapeta
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Abstract

In this study we incorporate the Sudakov form factor into the dipole factorization formula, where the hard scale of the former is provided by the photon virtuality $Q^2$. We obtain a general formula which we then apply to the well-known GBW and BGK saturation models. Parameters of the above Sudakov-improved models are successfully fitted to the $F_2$ data from HERA. We observe, in particular, that inclusion of the Sudakov factor on top of the GBW model improves description of data at large $Q^2$.

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Tomoki Goda, Krzysztof Kutak, Sebastian Sapeta. 2022-10-28. Sudakov effects and the dipole amplitude. https://doi.org/10.1016/j.nuclphysb.2023.116155

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