A robust jet reconstruction algorithm for high-energy lepton colliders

We propose a new sequential jet reconstruction algorithm for future lepton colliders at the energy frontier. The Valencia algorithm combines the natural distance criterion for lepton colliders with the greater robustness against backgrounds of algorithms adapted to hadron colliders. Results on a detailed Monte Carlo simulation of tt¯ and ZZ production at future linear e+e− colliders (ILC and CLIC) with a realistic level of background overlaid, show that it achieves better performance in the presence of background than the classical algorithms used at previous e+e− colliders

A robust jet reconstruction algorithm for high-energy lepton colliders

6 pages, 5 figuresWe propose a new sequential jet reconstruction algorithm for future lepton colliders at the energy frontier. The Valencia algorithm combines the natural distance criterion for lepton colliders with the greater robustness against backgrounds of algorithms adapted to hadron colliders. Results on a detailed Monte Carlo simulation of tt¯ and ZZ production at future linear e+e− colliders (ILC and CLIC) with a realistic level of background overlaid, show that it achieves better performance in the presence of background.The research leading to this paper was funded by the Spanish national plan for particle physics, under grant number FPA2013-48387-C6-5-P. The authors would like to thank Gavin Salam for helpful suggestions and guidance creating the plugin code and Bryan Webber for his careful reading of the manuscript.Peer reviewe