CMS results on multijet correlations

Safronov, G. and Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Filipovic, Nicolas and Bencze, György and Hajdu, Csaba and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia and Ujvári, Balázs and Veres, Gábor (2015) CMS results on multijet correlations. AIP CONFERENCE PROCEEDINGS, 1654. ISSN 0094-243X

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Abstract

We present recent measurements of multijet correlations using forward and low-pT jets performed by the CMS collaboration at the LHC collider. In pp collisions at √s = 7 TeV, azimuthal correlations in dijets separated in rapidity by up to 9.4 units were measured. The results are compared to BFKL- and DGLAP-based Monte Carlo generator and analytic predictions. In pp collisions at √s = 8 TeV, cross sections for jets with pT > 21 GeV and |y| < 4.7, and for track-jets with pT > 1 GeV (minijets) are presented. The minijet results are sensitive to the bound imposed by the total inelastic cross section, and are compared to various models for taming the growth of the 2 → 2 cross section at low pT.

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