The top quark production along with its antiparticle partner (tt̅) is an extremely vital process since that constitutes a major background for many beyond-the-standard-modelsearches. The CMS and ATLAS experiments have reported that the top quark’s transverse momentum (𝑝T) spectrum in this process exhibits a steeper fall in experimental data compared to theoretical predictions. At the CERN LHC, we have access to a high centre-ofmass energy, enabling us to conduct a study on boosted top quarks. A leptonic top tagger was developed to identify such high-𝑝T tops using large radius jets. In this talk, I will present the updates of our studies on measuring the tt̅ cross section in the dilepton final state with the help of our in-house developed top tagger. Towards the end, I will also present the results of my isolation study of Level-1 tau objects and the performance check on Level-1 tau triggers.
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