Boosted four-top production at the LHC: A window to Randall-Sundrum or extended color symmetry
Year: 2024
Type: article
Abstract: Scenarios seeking to address the issue of electroweak symmetry breaking often have heavy colored gauge bosons coupling preferentially to the top quark. Considering the bulk Randall-Sundrum as a typical example, we consider the prospects of the first Kaluza-Klein mode ( G ( 1 ) ) of the gluon being produced at the LHC in association with a t t ¯ pair. The enhanced coupling not only dictates that the dominant decay mode would be to a t t ¯ pair, but also to a very large G ( 1 ) width, necessitating the use of a renormalized G ( 1 ) propagator. This, along with the presence of large backgrounds (specially t t ¯ j j ), renders a conventional cut-based analysis ineffective, yielding only marginal significances of only around 2 σ . The use of machine learning (ML) techniques alleviates this problem to a great extent. In particular, the use of artificial neural networks helps us identify the most discriminating observables, thereby allowing a significance in excess of 4 σ for G ( 1 ) masses of ∼ 4 TeV . Published by the American Physical Society 2024
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
Awards: G108829957, G3873472944, G4431254530
OpenAlex ID: W4403486380