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arXiv · 0704.3706

A multivariate approach to heavy flavour tagging with cascade training

J. Bastos·Y. Liu
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Abstract

This paper compares the performance of artificial neural networks and boosted decision trees, with and without cascade training, for tagging b-jets in a collider experiment. It is shown, using a Monte Carlo simulation of $WH \to l\nu q\bar{q}$ events, that for a b-tagging efficiency of 50%, the light jet rejection power given by boosted decision trees without cascade training is about 55% higher than that given by artificial neural networks. The cascade training technique can improve the performance of boosted decision trees and artificial neural networks at this b-tagging efficiency level by about 35% and 80% respectively. We conclude that the cascade trained boosted decision trees method is the most promising technique for tagging heavy flavours at collider experiments.

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J. Bastos, Y. Liu. 2007-04-27. A multivariate approach to heavy flavour tagging with cascade training. https://doi.org/10.1088/1748-0221/2/11/p11007

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