Measurement of the tt¯tt¯ production cross section in the all-jets final state in pp collisions at s√=8s=8 TeV

Khachatryan, V. and Sirunyan, A. M. and Tumasyan, A. and Adam, W. and Asilar, E. and Filipovic, Nicolas and Bencze, György and Hajdú, Csaba and Hidas, Pál and Horváth, Dezső and Siklér, Ferenc and Veszprémi, Viktor and Vesztergombi, György and Zsigmond, Anna Júlia and Karancsi, János and Molnár, József and Bartók, Márton and Makovec, Alajos and Trócsányi, Zoltán and Ujvári, Balázs and Veres, Gábor (2016) Measurement of the tt¯tt¯ production cross section in the all-jets final state in pp collisions at s√=8s=8 TeV. EUROPEAN PHYSICAL JOURNAL C, 76 (3). ISSN 1434-6044

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Abstract

The cross section for toverline{{t}} production in the all-jets final state is measured in pp collisions at a centre-of-mass energy of 8 {TeV} at the LHC with the CMS detector, in data corresponding to an integrated luminosity of 18.4 {fb}^{-1}. The inclusive cross section is found to be 275.6 ± 6.1 {(stat)} ± 37.8 {(syst)} ± 7.2 {(lumi)} { pb}. The normalized differential cross sections are measured as a function of the top quark transverse momenta, p<SUB>T</SUB>, and compared to predictions from quantum chromodynamics. The results are reported at detector, parton, and particle levels. In all cases, the measured top quark p<SUB>T</SUB> spectra are significantly softer than theoretical predictions.

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