AbstractThe azimuthal correlation, $$\Delta \phi _{12}$$
Δ
ϕ
12
, of high transverse momentum jets in pp collisions at $$\sqrt{s}=13$$
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 $$\Delta \phi _{12}$$
Δ
ϕ
12
is observed. In the back-to-back region of $${\Delta \phi _{12}}\rightarrow \pi $$
Δ
ϕ
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 $$\alpha _\mathrm {s}$$
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 $$\Delta \phi _{12}$$
Δ
ϕ
12
measurements are also compared with predictions using MCatNLO together Pythia8, illustrating the importance of details of the parton shower evolution.
The cross-section for high-transverse-momentum hadron jet production in the parton model
