Tagging highly boosted top quarks
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...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
10 January 2014
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| In: |
Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2014, Volume: 89, Issue: 1 |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.89.014007 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.89.014007 Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.89.014007 
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| Author Notes: | S. Schätzel and M. Spannowsky |
| Summary: | 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 pT>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. |
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| Item Description: | Gesehen am 14.10.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1550-2368 |
| DOI: | 10.1103/PhysRevD.89.014007 |