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arXiv · 2609.11179

Twist decomposition of exclusive heavy meson production cross sections

Mariusz Sadzikowski
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Abstract

We study the twist decomposition of the total cross sections for exclusive heavy vector meson electroproduction and photoproduction in the $\gamma^\ast p$ processes, within the leading logarithmic $1/x$ BFKL formalism. The Mellin transforms of the impact factors of the vector meson are calculated. We show that the higher twist contributions are strongly suppressed in the low-$x$ kinematical regime. Possible enhancement of the higher twists effects for nuclei targets is discussed.

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Mariusz Sadzikowski. 2026-09-10. Twist decomposition of exclusive heavy meson production cross sections. https://arxiv.org/abs/2609.11179

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