Abdulhamid, M.; 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.; Quiros, A. Leon; Martins, D. E.; Mendizabal, M.; Figueroa, K. Moral; Prestel, S.; Monfared, S. Taheri; Suslu, C.; Cerci, D. Sunar; van Kampen, A. M.; Van Mechelen, P.; Verbytskyi, A.; Wang, Q.; Yang, H.; Zhou, Y. (2021) Azimuthal correlations of high transverse momentum jets at next-to-leading order in the parton branching method. European physical journal C : particles and fields, 82 (36). ISSN 1434-6044
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Abstract
The azimuthal correlation, Δϕ_12, 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 Δϕ_12 is observed. In the back-to-back region of Δϕ_12→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 α_s, 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 Δϕ_12 measurements are also compared with predictions using MCatNLO together PYTHIA8, illustrating the importance of details of the parton shower evolution.
| Item Type: | Article | ||||||||
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| Uncontrolled Keywords: | Azimuthal correlations ; high transverse momentum jets ; parton branching ; NLO | ||||||||
| Subjects: | NATURAL SCIENCES > Physics | ||||||||
| Divisions: | Theoretical Physics Division | ||||||||
| Projects: |
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| Depositing User: | Sofija Konjević | ||||||||
| Date Deposited: | 20 Jul 2022 13:42 | ||||||||
| URI: | http://fulir.irb.hr/id/eprint/7485 | ||||||||
| DOI: | 10.1140/epjc/s10052-022-09997-1 |
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