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arXiv · 2601.07302

The DIS dipole picture cross section in exact kinematics

Magnus Bertilsson·Tuomas Lappi·Heikki Mäntysaari·Xuan-Bo Tong
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Abstract

We implement a finite energy constraint in the dipole picture of deep inelastic scattering by restricting the invariant mass of the produced partonic system by the virtual photon-target center of mass energy. We show that, for $Q^2=1$GeV$^2$, the effect of this constraint can reach up to $\sim$35% for charm quarks and $\sim$7% for light quarks at $x=0.01$, but then rapidly decreases at smaller $x$ or larger $Q^2$.

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Magnus Bertilsson, Tuomas Lappi, Heikki Mäntysaari, Xuan-Bo Tong. 2026-01-12. The DIS dipole picture cross section in exact kinematics. https://arxiv.org/abs/2601.07302

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