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Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method

Abdulhamid, M.I.; Al-Mashad, M. A.; Martinez, A. Bermudez; Bonomelli, G.; Bubanja, I.; Crnković, Nikola; Colombina, F.; D’Anzi, B.; Cerci, S.; Davydov, M.; Banos, L. I. Estevez; Forzano, N.; Hautmann, F.; Jung, H.; Kim, S.; Quirós, A. León; Martins, D. E.; Mendizabal, M.; Figueroa, K. Moral; Prestel, S.; Monfared, S. Taheri; Süslü, C.; Cerci, D. Sunar; van Kampen, A. M.; Van Mechelen, P.; Verbytskyi, A.; Wang, Q.; Yang, H.; Zhou, Y. (2022) Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method. The European Physical Journal C, 82 (1). ISSN 1434-6044

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The azimuthal correlation, Δϕ12, of high transverse momentum jets in pp collisions at s√=13 TeV is studied by applying PB-TMD distributions to NLO calculations via MCatNLO together with the PB-TMD parton shower. A very good description of the cross section as a function of Δϕ12 is observed. In the back-to-back region of Δϕ12→π, a very good agreement is observed with the PB-TMD Set 2 distributions while significant deviations are obtained with the PB-TMD Set 1 distributions. Set 1 uses the evolution scale while Set 2 uses transverse momentum as an argument in αs, and the above observation therefore confirms the importance of an appropriate soft-gluon coupling in angular ordered parton evolution. The total uncertainties of the predictions are dominated by the scale uncertainties of the matrix element, while the uncertainties coming from the PB-TMDs and the corresponding PB-TMD shower are very small. The Δϕ12 measurements are also compared with predictions using MCatNLO together PYTHIA8, illustrating the importance of details of the parton shower evolution.

Item Type: Article
Uncontrolled Keywords: transverse momentum jets; azimuthal correlation; NLO calculations
Subjects: NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
Divisions: Theoretical Physics Division
Project titleProject leaderProject codeProject type
Razotkrivanje strukture hadrona pomoću tvrdih ekskluzivnih procesa-REVESTRUCTUREKornelija Passek-Kumerički; Krešimir Kumerički; Lech SzymanowskiIP-2019-04-9709HRZZ
Depositing User: Nikola Crnković
Date Deposited: 05 Feb 2024 14:51
DOI: 10.1140/epjc/s10052-022-09997-1

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