Dependency of boosted tagging algorithms on the event color structure

The impact of event color structure on the performance of the johns-hopkins, cms, heptoptagger and n-subjettiness algorithms is investigated by studying color singlet and color octet resonances decaying to top-quark pairs. Large differences in top-tagging efficiency are observed due to the different color charge of each resonance. These differences are quantified as a function of the algorithm parameters, the jet size parameter and the probability to misidentify light quarks and gluons as top candidates. We suggest that future experimental searches would benefit from optimizing the choice of algorithm parameters in order to minimize this source of model dependency.