Recursive Soft Drop
Name
13130_2018_Article_8456.pdf
Size
2.21 MB
Format
Adobe PDF
Checksum (MD5)
4ea2af8ff15815e9409f5e0752bc56c3
Author(s)
Necib, Lina
Soyez, Gregory
Dreyer, Frederic
Thaler, Jesse
Date Issued
June 2018
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Dreyer, Frédéric A., et al. “Recursive Soft Drop.” Journal of High Energy Physics, vol. 2018, no. 6, June 2018.
Version
Final published version
Abstract
We introduce a new jet substructure technique called Recursive Soft Drop, which generalizes the Soft Drop algorithm to have multiple grooming layers. Like the original Soft Drop method, this new recursive variant traverses a jet clustering tree to remove soft wide-angle contamination. By enforcing the Soft Drop condition N times, Recursive Soft Drop improves the jet mass resolution for boosted hadronic objects like W bosons, top quarks, and Higgs bosons. We further show that this improvement in mass resolution persists when including the effects of pileup, up to large pileup multiplicities. In the limit that N goes to infinity, the resulting groomed jets formally have zero catchment area. As an alternative approach, we present a bottom-up version of Recursive Soft Drop which, in its local form, is similar to Recursive Soft Drop and which, in its global form, can be used to perform event-wide grooming.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP06(2018)093
