Probing a leptophobic top-colour model with cross section measurements and precise signal and background predictions: A case study

• DOI: 10.21468/scipostphyscore.6.1.014
• Publication Date: 2023-03-17T12:58:52Z
• Authors: Mohammad Mahdi Al...; Jonathan Mark But...; Tomaš Ježo; Michael Klasen; Ingo Schienbein
• Keywords: Fiducial marker; SIGNAL (programming language)

The sensitivity of particle-level fiducial cross section measurements from ATLAS, CMS and LHCb to a leptophobic top-colour model is studied. has previously been the subject resonance searches. Here we compare it directly state-of-the-art predictions for Standard Model top quark production also take into account next-to-leading order new physics signal. We make use Contur framework evaluate current measurements, first under default assumption that measurement SM exactly coincide, then using full theory calculation t ¯t at next-to-next-to-leading as background model. derive exclusion limits, discuss differences between these approaches, limits searches by ATLAS CMS.