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Title: Building a better boosted top tagger

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.
Authors:
 [1] ;  [1] ;  [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
Publication Date:
Grant/Contract Number:
SC0011090; SC0012567
Type:
Accepted Manuscript
Journal Name:
Physical Review. D, Particles, Fields, Gravitation and Cosmology
Additional Journal Information:
Journal Volume: 91; Journal Issue: 3; Journal ID: ISSN 1550-7998
Publisher:
American Physical Society (APS)
Research Org:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
OSTI Identifier:
1505739
Alternate Identifier(s):
OSTI ID: 1180849

Larkoski, Andrew J., Moult, Ian, and Neill, Duff. Building a better boosted top tagger. United States: N. p., Web. doi:10.1103/physrevd.91.034035.
Larkoski, Andrew J., Moult, Ian, & Neill, Duff. Building a better boosted top tagger. United States. doi:10.1103/physrevd.91.034035.
Larkoski, Andrew J., Moult, Ian, and Neill, Duff. 2015. "Building a better boosted top tagger". United States. doi:10.1103/physrevd.91.034035. https://www.osti.gov/servlets/purl/1505739.
@article{osti_1505739,
title = {Building a better boosted top tagger},
author = {Larkoski, Andrew J. and Moult, Ian and Neill, Duff},
abstractNote = {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.},
doi = {10.1103/physrevd.91.034035},
journal = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},
number = 3,
volume = 91,
place = {United States},
year = {2015},
month = {2}
}