Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 50: Top physics 2 (top pair cross section)

T 50.6: Talk

Tuesday, March 5, 2024, 17:15–17:30, Geb. 30.95: Audimax

Towards a WbWb differential cross-section measurement — •Eleonora Loiacono — DESY

The production of a top quark pair is extensively studied at the Large Hadron Collider (LHC). It constitutes a significant background in many searches for physics Beyond the Standard Model (BSM). The final state of this process, WWbb, interferes with the production of a single top quark in association with a W boson at Next Leading Order (tWb).
In this contribution, I will focus on presenting different techniques that are used to correct the data for inefficiencies and limited geometric acceptance for the WWbb single lepton channel, with the goal of improving the modelling of Standard Model (SM) processes for BSM searches.

First differential cross-section measurements in variables that are maximally sensitive to the interference, using data from second run of the LHC, will be presented.

Keywords: Top Quark; Interference; Single Lepton; LHC; ATLAS