Gluon imaging using azimuthal correlations in diffractive scattering at the Electron-Ion Collider
Mäntysaari, H., Roy, K., Salazar, F., & Schenke, B. (2021). Gluon imaging using azimuthal correlations in diffractive scattering at the Electron-Ion Collider. Physical Review D, 103(9), Article 094026. https://doi.org/10.1103/physrevd.103.094026
Published inPhysical Review D
© Authors, 2021
We study coherent diffractive photon and vector meson production in electron-proton and electron-nucleus collisions within the Color Glass Condensate effective field theory. We show that electron-photon and electron-vector meson azimuthal angle correlations are sensitive to nontrivial spatial correlations in the gluon distribution of the target, and perform explicit calculations using spatially dependent McLerran-Venugopalan initial color charge configurations coupled to the numerical solution of small x JIMWLK evolution equations. We compute the cross-section differentially in Q2 and |t| and find sizeable anisotropies in the electron-photon and electron-J/ψ azimuthal correlations (v1,2≈2–10%) in electron-proton collisions for the kinematics of the future Electron-Ion Collider. In electron-gold collisions these modulations are found to be significantly smaller (v1,2<0.1%). We also compute incoherent diffractive production where we find that the azimuthal correlations are sensitive to fluctuations of the gluon distribution in the target. ...
PublisherAmerican Physical Society
Publication in research information system
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Postdoctoral Researcher, AoF
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingH. M. is supported by the Academy of Finland Project No. 314764, and by the European Research Council project STRONG-2020 (Grant agreement No. 824093). F. S. and B. P. S. are supported under DOE Contract No. DE-SC0012704. Computing resources from CSC—IT Center for Science in Espoo, Finland and from the Finnish Grid and Cloud Infrastructure (persistent identifier urn:nbn:fi:research-infras-2016072533) were used in this work. F. S. and K. R. were also supported by the joint Brookhaven National Laboratory-Stony Brook University Center for Frontiers in Nuclear Science (CFNS). ...
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