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arXiv · 2105.08503

Impact parameter dependence of color charge correlations in the proton

Adrian Dumitru·Heikki Mäntysaari·Risto Paatelainen
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Abstract

The impact parameter dependence of color charge correlators in the proton is obtained from the light front formalism in light cone gauge. We include NLO corrections due to the $|qqqg\rangle$ Fock state via light-cone perturbation theory. Near the center of the proton, the $b$-dependence of the correlations is very different from a "transverse profile function". The resulting $t$-dependence of exclusive $J/\Psi$ photoproduction transitions from exponential to power law at $|t| \approx 1$ GeV$^2$. This prediction could be tested at upcoming DIS facilities or in nucleus-proton ultraperipheral collisions (UPCs).

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Adrian Dumitru, Heikki Mäntysaari, Risto Paatelainen. 2021-05-18. Impact parameter dependence of color charge correlations in the proton. https://arxiv.org/abs/2105.08503

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