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Impact parameter dependence of color charge correlations in the proton
oleh: Adrian Dumitru, Heikki Mäntysaari, Risto Paatelainen
Format: | Article |
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Diterbitkan: | SciPost 2022-07-01 |
Deskripsi
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).