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Title: Back-to-Back Inclusive Dijets in Deep Inelastic Scattering at Small x : Complete NLO Results and Predictions

Abstract

We compute the back-to-back dijet cross section in deep inelastic scattering at small $$x$$ to next-to-leading order (NLO) in the color glass condensate effective field theory. Our result can be factorized into a convolution of the Weizsäcker-Williams gluon transverse-momentum-dependent distribution function (WW gluon TMD) with a universal soft factor and an NLO coefficient function. The soft factor includes both double and single logarithms in the ratio of the relative transverse momentum $$P$$⊥ of the dijet pair to the dijet momentum imbalance $$q$$⊥; its renormalization group (RG) evolution is resummed into the Sudakov factor. Likewise, the WW TMD obeys a nonlinear RG equation in $$x$$ that is kinematically constrained to satisfy both the lifetime and rapidity ordering of the projectile. Exact analytical expressions are obtained for the NLO coefficient function of transversely and longitudinally polarized photons. Our results allow for the first quantitative separation of the dynamics of Sudakov suppression from that of gluon saturation. They can be extended to other final states and provide a framework for precision tests of novel QCD many-body dynamics at the Electron-Ion Collider.

Authors:
ORCiD logo; ORCiD logo; ; ORCiD logo;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF); USDOE Laboratory Directed Research and Development (LDRD) Program; Polish National Science Centre (NCN)
OSTI Identifier:
2309786
Alternate Identifier(s):
OSTI ID: 2324881
Report Number(s):
BNL-225390-2024-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 081902
Grant/Contract Number:  
SC0012704; PHY-1945471; 2019/32/C/ST2/00202; 2021/43/D/ST2/03375
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 132 Journal Issue: 8; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Caucal, Paul, Salazar, Farid, Schenke, Björn, Stebel, Tomasz, and Venugopalan, Raju. Back-to-Back Inclusive Dijets in Deep Inelastic Scattering at Small x : Complete NLO Results and Predictions. United States: N. p., 2024. Web. doi:10.1103/PhysRevLett.132.081902.
Caucal, Paul, Salazar, Farid, Schenke, Björn, Stebel, Tomasz, & Venugopalan, Raju. Back-to-Back Inclusive Dijets in Deep Inelastic Scattering at Small x : Complete NLO Results and Predictions. United States. https://doi.org/10.1103/PhysRevLett.132.081902
Caucal, Paul, Salazar, Farid, Schenke, Björn, Stebel, Tomasz, and Venugopalan, Raju. Tue . "Back-to-Back Inclusive Dijets in Deep Inelastic Scattering at Small x : Complete NLO Results and Predictions". United States. https://doi.org/10.1103/PhysRevLett.132.081902.
@article{osti_2309786,
title = {Back-to-Back Inclusive Dijets in Deep Inelastic Scattering at Small x : Complete NLO Results and Predictions},
author = {Caucal, Paul and Salazar, Farid and Schenke, Björn and Stebel, Tomasz and Venugopalan, Raju},
abstractNote = {We compute the back-to-back dijet cross section in deep inelastic scattering at small $x$ to next-to-leading order (NLO) in the color glass condensate effective field theory. Our result can be factorized into a convolution of the Weizsäcker-Williams gluon transverse-momentum-dependent distribution function (WW gluon TMD) with a universal soft factor and an NLO coefficient function. The soft factor includes both double and single logarithms in the ratio of the relative transverse momentum $P$⊥ of the dijet pair to the dijet momentum imbalance $q$⊥; its renormalization group (RG) evolution is resummed into the Sudakov factor. Likewise, the WW TMD obeys a nonlinear RG equation in $x$ that is kinematically constrained to satisfy both the lifetime and rapidity ordering of the projectile. Exact analytical expressions are obtained for the NLO coefficient function of transversely and longitudinally polarized photons. Our results allow for the first quantitative separation of the dynamics of Sudakov suppression from that of gluon saturation. They can be extended to other final states and provide a framework for precision tests of novel QCD many-body dynamics at the Electron-Ion Collider.},
doi = {10.1103/PhysRevLett.132.081902},
journal = {Physical Review Letters},
number = 8,
volume = 132,
place = {United States},
year = {Tue Feb 20 00:00:00 EST 2024},
month = {Tue Feb 20 00:00:00 EST 2024}
}

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