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


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Ministry reporting: Yes

Reporting Year: 2021

JUFO rating: 2


Last updated on 2022-20-09 at 15:26