Tracking down hyper-boosted top quarks
Name
13130_2015_Article_1423.pdf
Size
981.16 KB
Format
Adobe PDF
Checksum (MD5)
554f315b66ae309243de7f7a877c9bc5
Author(s)
Maltoni, Fabio
Selvaggi, Michele
Larkoski, Andrew
Date Issued
June 2015
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Larkoski, Andrew J. et al. "Tracking down hyper-boosted top quarks." Journal of High Energy Physics 2015 (June 2015): 32 © 2015 The Authors
Version
Final published version
Abstract
The identification of hadronically decaying heavy states, such as vector bosons, the Higgs, or the top quark, produced with large transverse boosts has been and will continue to be a central focus of the jet physics program at the Large Hadron Collider (LHC). At a future hadron collider working at an order-of-magnitude larger energy than the LHC, these heavy states would be easily produced with transverse boosts of several TeV. At these energies, their decay products will be separated by angular scales comparable to individual calorimeter cells, making the current jet substructure identification techniques for hadronic decay modes not directly employable. In addition, at the high energy and luminosity projected at a future hadron collider, there will be numerous sources for contamination including initial- and final-state radiation, underlying event, or pile-up which must be mitigated. We propose a simple strategy to tag such “hyper-boosted” objects that defines jets with radii that scale inversely proportional to their transverse boost and combines the standard calorimetric information with charged track-based observables. By means of a fast detector simulation, we apply it to top quark identification and demonstrate that our method efficiently discriminates hadronically decaying top quarks from light QCD jets up to transverse boosts of 20 TeV. Our results open the way to tagging heavy objects with energies in the multi-TeV range at present and future hadron colliders.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP06(2015)032
