Search for new physics using top quark pairs produced in association with a boosted Z or Higgs boson in effective field theory

Standard Model effective field theory (EFT) provides a broad search framework for new physics which may exist at collision energies beyond the current reach of the LHC. We present the current status of the analysis searching for EFT effects in pp collisions where a top quark pair is produced in association with a boosted Z or Higgs boson, and the Z or Higgs decays to a bb pair. This process is sufficiently rare, and masked by a large background of top quark pairs produced with additional jets arising from quark and gluon fragmentations. We utilize a transformer based machine learning network, SPANet, to discriminate between signal and background events, and increase the analysis sensitivity. In the EFT interpretation, a new method of EFT Monte Carlo reweighting is used to produce flexible samples which contain weights for every Wilson Coefficient affecting a process. In addition to interpretations based on EFT, we will discuss the measurements of the inclusive and differential cross sections for the ttZ/H(bb) process.