  High-momentum top quarks are a natural physical system in collider
experiments for testing models of new physics, and jet substructure methods are
key both to exploiting their largest decay mode and to assuaging resolution
difficulties as the boosted system becomes increasingly collimated in the
detector. To be used in new-physics interpretation studies, it is crucial that
related methods get implemented in analysis frameworks allowing for the
reinterpretation of the results of the LHC such as MadAnalysis 5 and Rivet. We
describe the implementation of the HEPTopTagger algorithm in these two
frameworks, and we exemplify the usage of the resulting functionalities to
explore the sensitivity of boosted top reconstruction performance to new
physics contributions from the Standard Model Effective Field Theory. The
results of this study lead to important conclusions about the implicit
assumption of Standard-Model-like top-quark decays in associated collider
analyses, and for the prospects to constrain the Standard Model Effective Field
Theory via kinematic observables built from boosted semileptonic top-antitop
events selected using HEPTopTagger.
