A1 Journal article (refereed)
The importance of kinematic twists and genuine saturation effects in dijet production at the Electron-Ion Collider (2021)
Boussarie, R., Mäntysaari, H., Salazar, F., & Schenke, B. (2021). The importance of kinematic twists and genuine saturation effects in dijet production at the Electron-Ion Collider. Journal of High Energy Physics, 2021(9), Article 178. https://doi.org/10.1007/jhep09(2021)178
JYU authors or editors
Publication details
All authors or editors: Boussarie, Renaud; Mäntysaari, Heikki; Salazar, Farid; Schenke, Björn
Journal or series: Journal of High Energy Physics
ISSN: 1126-6708
eISSN: 1029-8479
Publication year: 2021
Volume: 2021
Issue number: 9
Article number: 178
Publisher: Springer
Publication country: Germany
Publication language: English
DOI: https://doi.org/10.1007/jhep09(2021)178
Publication open access: Openly available
Publication channel open access: Open Access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/78036
Web address of parallel published publication (pre-print): https://arxiv.org/abs/2106.11301
Abstract
We compute the differential yield for quark anti-quark dijet production in high-energy electron-proton and electron-nucleus collisions at small x as a function of the relative momentum P⊥ and momentum imbalance k⊥ of the dijet system for different photon virtualities Q2, and study the elliptic and quadrangular anisotropies in the relative angle between P⊥ and k⊥. We review and extend the analysis in [1], which compared the results of the Color Glass Condensate (CGC) with those obtained using the transverse momentum dependent (TMD) framework. In particular, we include in our comparison the improved TMD (ITMD) framework, which resums kinematic power corrections of the ratio k⊥ over the hard scale Q⊥. By comparing ITMD and CGC results we are able to isolate genuine higher saturation contributions in the ratio Qs/Q⊥ which are resummed only in the CGC. These saturation contributions are in addition to those in the Weizsäcker-Williams gluon TMD that appear in powers of Qs/k⊥. We provide numerical estimates of these contributions for inclusive dijet production at the future Electron-Ion Collider, and identify kinematic windows where they can become relevant in the measurement of dijet and dihadron azimuthal correlations. We argue that such measurements will allow the detailed experimental study of both kinematic power corrections and genuine gluon saturation effects.
Keywords: particle physics; quantum chromodynamics
Free keywords: deep inelastic scattering (phenomenology); QCD phenomenology
Contributing organizations
Related projects
- Saturation phenomena in high energy scattering
- Mäntysaari, Heikki
- Research Council of Finland
Ministry reporting: Yes
Reporting Year: 2021
JUFO rating: 2