Disentangling heavy flavor at colliders
Name
PhysRevD.96.054019.pdf
Size
1.9 MB
Format
Adobe PDF
Checksum (MD5)
1b1838803a3d1a3c27022cc07d04cafd
Author(s)
Rodd, Nicholas L.
Thaler, Jesse
Ilten, Philip J
Williams, Michael
Date Issued
September 2017
Journal
Physical Review D
Publisher
American Physical Society
Citation
Ilten, Philip et al. "Disentangling heavy flavor at colliders." Physical Review D 96, 5 (September 2017): 054019 © 2017 American Physical Society
Version
Final published version
Abstract
We propose two new analysis strategies for studying charm and beauty quarks at colliders. The first strategy is aimed at testing the kinematics of heavy-flavor quarks within an identified jet. Here, we use the SoftDrop jet-declustering algorithm to identify two subjets within a large-radius jet, using subjet flavor tagging to test the heavy-quark splitting functions of QCD. For subjets containing a J/ψ or ϒ, this declustering technique can also help probe the mechanism for quarkonium production. The second strategy is aimed at isolating heavy-flavor production from gluon splitting. Here, we introduce a new FlavorCone algorithm, which smoothly interpolates from well-separated heavy-quark jets to the gluon-splitting regime where jets overlap. Because of its excellent ability to identify charm and beauty hadrons, the LHCb detector is ideally suited to pursue these strategies, though similar measurements should also be possible at ATLAS and CMS. Together, these SoftDrop and FlavorCone studies should clarify a number of aspects of heavy-flavor physics at colliders, and provide crucial information needed to improve heavy-flavor modeling in parton-shower generators.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.96.054019
