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Building a better boosted top tagger

Author(s)
Larkoski, Andrew; Moult, Ian James; Neill, Duff Austin
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Abstract
Distinguishing hadronically decaying boosted top quarks from massive QCD jets is an important challenge at the Large Hadron Collider. In this paper we use the power-counting method to study jet substructure observables designed for top tagging, and gain insight into their performance. We introduce a powerful new family of discriminants formed from the energy correlation functions which outperform the widely used N-subjettiness. These observables take a highly nontrivial form, demonstrating the importance of a systematic approach to their construction.
Date issued
2015-02
URI
http://hdl.handle.net/1721.1/95766
Department
Massachusetts Institute of Technology. Center for Theoretical Physics; Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Larkoski, Andrew J., Ian Moult, and Duff Neill. “Building a Better Boosted Top Tagger.” Phys. Rev. D 91, no. 3 (February 2015). © 2015 American Physical Society
Version: Final published version
ISSN
1550-7998
1550-2368

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