The dependency of boosted tagging algorithms on the event colour structure
High Energy Physics - Phenomenology
2015-06-05 v1 High Energy Physics - Experiment
Abstract
The impact of event colour structure on the performance of the Johns-Hopkins, CMS, HEPToptagger and N-Subjettiness algorithms is investigated by studying colour singlet and colour octet resonances decaying to top-quark pairs. Large differences in top-tagging efficiency are observed due to the different colour 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 optimising the choice of algorithm parameters in order to minimise this source of model dependency.
Keywords
Cite
@article{arxiv.1207.6066,
title = {The dependency of boosted tagging algorithms on the event colour structure},
author = {Kiran Joshi and Andrew D. Pilkington and Michael Spannowsky},
journal= {arXiv preprint arXiv:1207.6066},
year = {2015}
}
Comments
17 pages, 7 figures