CMS-PAS-SMP-21-006

CMS-PAS-SMP-21-006
Cross section measurements of jet multiplicity and jet transverse momenta in multijet events at $\sqrt{s}=$ 13 TeV
CMS Collaboration
July 2021

Abstract: Multijet events at large transverse momentum ( $p_{\mathrm{T}}$ ) are measured at $\sqrt{s}=$ 13 TeV with data recorded with the CMS detector at the LHC corresponding to an integrated luminosity of 36.3 fb $^{-1}$ . The multiplicity of jets with $p_{\mathrm{T}} >$ 50 GeV in addition to a high $p_{\mathrm{T}}$ dijet system is measured for different regions of the transverse momentum of the leading $p_{\mathrm{T}}$ jet and as a function of the azimuthal angle $\Delta\phi_{1,2}$ between the two leading jets in the dijet system. The differential cross section of the four jets leading in $p_{\mathrm{T}}$ is measured as a function of their transverse momentum. The measurements are compared to leading order matrix-element calculations supplemented with parton shower, hadronization and multiparton interactions. In addition next-to-leading order matrix-element calculations combined with conventional parton shower as well as with Parton Branching (PB) transverse momentum dependent (TMD) parton densities and PB-TMD initial state parton shower are compared to the measurements.
Links: CDS record (PDF) ; CADI line (restricted) ; These preliminary results are superseded in this paper, Submitted to EPJC. The superseded preliminary plots can be found here.

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