Aspects of track-assisted mass
Name
13130_2019_Article_10185.pdf
Size
1.57 MB
Format
Adobe PDF
Checksum (MD5)
d6a3add686e94b6c7c1e6f30cb50be89
Author(s)
Elder, Benjamin T
Thaler, Jesse
Date Issued
March 2019
Journal
Journal of high energy physics
Publisher
Springer Berlin Heidelberg
Citation
Elder, Benjamin T. and Jesse Thaler, "Aspects of track-assisted mass." Journal of high energy physics 2019: no. 104 doi 10.1007/JHEP03(2019)104 ©2019 Author(s)
Version
Final published version
Abstract
Track-assisted mass is a proxy for jet mass that only uses direction information from charged particles, allowing it to be measured at the Large Hadron Collider with very fine angular resolution. In this paper, we introduce a generalization of track-assisted mass and analyze its performance in both parton shower generators and resummed calculations. For the original track-assisted mass, the track-only mass is rescaled by the charged energy fraction of the jet. In our generalization, the rescaling factor includes both per-jet and ensemble-averaged information, facilitating a closer correspondence to ordinary jet mass. Using the track function formalism in electron-positron collisions, we calculate the spectrum of generalized track-assisted mass to next-to-leading-logarithmic order with leading-order matching. These resummed calculations provide theoretical insight into the close correspondence between track-assisted mass and ordinary jet mass. With the growing importance of jet grooming algorithms, we also calculate track-assisted mass on soft-drop groomed jets. ©2019
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP03(2019)104
