Evidence for top quark production in nucleus-nucleus collisions

  title={Evidence for top quark production in nucleus-nucleus collisions},
  author={C. Collaboration},
Evidence for the production of top quarks in heavy ion collisions is reported in a data sample of lead-lead collisions recorded in 2018 by the CMS experiment at a nucleon-nucleon center-of-mass energy of √ sNN = 5.02 TeV, corresponding to an integrated luminosity of 1.7 ± 0.1 nb−1. Top quark pair (t t) production is measured in events with two opposite-sign high-pT isolated leptons (l±l∓ = e+e−, μ+μ−, and e±μ∓). We test the sensitivity to the t t signal process by requiring or not the… Expand

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