# First measurement of the cross section for top-quark pair production in proton-proton collisions at √s=7 TeV

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109 Scopus citations

## Abstract

The first measurement of the cross section for top-quark pair production in pp collisions at the Large Hadron Collider at center-of-mass energy s=7 TeV has been performed using a data sample corresponding to an integrated luminosity of 3.1±0.3 pb-1 recorded by the CMS detector. This result utilizes the final state with two isolated, highly energetic charged leptons, large missing transverse energy, and two or more jets. Backgrounds from Drell-Yan and non-W/Z boson production are estimated from data. Eleven events are observed in the data with 2.1±1.0 events expected from background. The measured cross section is 194±72(stat.)±24(syst.)±21(lumi.) pb, consistent with next-to-leading order predictions.

Original language English 424-443 20 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 695 5 https://doi.org/10.1016/j.physletb.2010.11.058 Published - 17 Jan 2011

## Keywords

• CMS
• Cross section
• LHC
• Physics
• Top quark

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