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Paatelainen, Risto

Publications and source records attributed to Paatelainen, Risto.

3 records
All sourcesNASA NTRSDOE OSTI
DOE OSTI2022

Azimuthal correlations in diffractive scattering at the Electron-Ion Collider

We calculate azimuthal correlations between the exclusively produced vector meson and the scattered electron in Deep Inelastic Scattering processes at the future Electron-Ion Collider (EIC). We identify ``kinematical'' and ``intrinsic'' contributions to these correlations, and show that the correlations are sensitive to the non-trivial correlations in the gluon distribution of the target. Realistic predictions at the EIC kinematics are provided using two different approaches to describe the dipole-proton interaction at relatively small x.

Dumitru, Adrian↗
DOE OSTI2022

Impact parameter dependence of color charge correlations in the proton

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 | q q q g ⟩ Fock state via light-cone perturbation theory. Near the center of the proton, the b b -dependence of the correlations is very different from a ``transverse profile function’’. The resulting t t -dependence of exclusive J/\Psi J / Ψ photoproduction transitions from exponential to power law at |t| \approx 1 | t | ≈ 1 ~GeV ^2 2 . This prediction could be tested at upcoming DIS facilities or in nucleus-proton ultraperipheral collisions (UPCs).

Dumitru, Adrian↗