CMS Collaboration2024-05-032024-05-032023CMS Collaboration. (2023). Measurements of jet multiplicity and jet transverse momentum in multijet events in proton–proton collisions at $${\sqrt{s}=13\, \text {TeV}}$$. The European Physical Journal C, 83(8), 742. https://doi.org/10.1140/epjc/s10052-023-11753-yhttps://hdl.handle.net/1911/115587Multijet events at large transverse momentum ($$p_{\textrm{T}}$$) are measured at $$\sqrt{s}=13\,\text {Te\hspace{-.08em}V} $$using data recorded with the CMS detector at the LHC, corresponding to an integrated luminosity of $$36.3{\,\text {fb}^{-1}} $$. The multiplicity of jets with $$p_{\textrm{T}} >50\,\text {Ge\hspace{-.08em}V} $$that are produced in association with a high-$$p_{\textrm{T}}$$dijet system is measured in various ranges of the $$p_{\textrm{T}}$$of the jet with the highest transverse momentum and as a function of the azimuthal angle difference $$\varDelta \phi _{1,2}$$between the two highest $$p_{\textrm{T}}$$jets in the dijet system. The differential production cross sections are measured as a function of the transverse momenta of the four highest $$p_{\textrm{T}}$$jets. The measurements are compared with leading and next-to-leading order matrix element calculations supplemented with simulations of parton shower, hadronization, and multiparton interactions. In addition, the measurements are compared with next-to-leading order matrix element calculations combined with transverse-momentum dependent parton densities and transverse-momentum dependent parton shower.engExcept where otherwise noted, this work is licensed under a Creative Commons Attribution (CC BY) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Journal articles10052-023-11753-yhttps://doi.org/10.1140/epjc/s10052-023-11753-y