Speaker
Description
We present our recent results published in 10.1140/epjc/s10052-022-09997-1. The azimuthal correlation of high transverse momentum jets in pp collisions 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 the di-jet azimuthal separation is observed. In the back-to-back region of 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 measurements are also compared with predictions using MCatNLO together with PYTHIA8, illustrating the importance of details of the parton shower evolution.
| Submitted on behalf of a Collaboration? | No |
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