Tagging highly boosted top quarks

Schätzel, Sebastian; Spannowsky, Michael

doi:10.1103/physrevd.89.014007

Tagging highly boosted top quarks

Schätzel, Sebastian; Spannowsky, Michael

Authors

Sebastian Schätzel

Professor Michael Spannowsky michael.spannowsky@durham.ac.uk
Director

Abstract

For highly energetic top quarks, the products of the decay t→bqq ′ are collimated. The three-prong decay structure can no longer be resolved using calorimeter information alone if the particle jet separation approaches the calorimeter granularity. We propose a new method, the HPTTopTagger, that uses tracks of charged particles inside a fat jet to find top quarks with transverse momentum p T >1 TeV . The tracking information is complemented by the calorimeter measurement of the fat jet energy to eliminate the sensitivity to jet-to-jet fluctuations in the charged-to-neutral particle ratio. We show that with the HPTTopTagger, a leptophobic narrow-mass Z ′ boson of mass 3 TeV could be found using 300 fb −1 of 14 TeV LHC data.

Citation

Schätzel, S., & Spannowsky, M. (2014). Tagging highly boosted top quarks. Physical Review D, 89(1), Article 014007. https://doi.org/10.1103/physrevd.89.014007

Journal Article Type	Article
Publication Date	Jan 10, 2014
Deposit Date	Dec 12, 2014
Publicly Available Date	Apr 13, 2015
Journal	Physical Review D
Print ISSN	1550-7998
Electronic ISSN	1550-2368
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	89
Issue	1
Article Number	014007
DOI	https://doi.org/10.1103/physrevd.89.014007

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Reprinted with permission from the American Physical Society: Phys. Rev. D 89, 014007 © 2014 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.