Discoveries far from the lamppost with matrix elements and ranking
Abstract
The prevalence of null results in searches for new physics at the LHC motivates the effort to make these searches as model-independent as possible. We describe procedures for adapting the Matrix Element Method for situations where the signal hypothesis is not known a priori. We also present general and intuitive approaches for performing analyses and presenting results, which involve the flattening of background distributions using likelihood information. The first flattening method involves ranking events by background matrix element, the second involves quantile binning with respect to likelihood (and other) variables, and the third method involves reweighting histograms by the inverse of the background distribution.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1198585
- Alternate Identifier(s):
- OSTI ID: 1184801
- Grant/Contract Number:
- SC0010296; FG02-97ER41029
- Resource Type:
- Published Article
- Journal Name:
- Physics Letters B
- Additional Journal Information:
- Journal Name: Physics Letters B Journal Volume: 743 Journal Issue: C; Journal ID: ISSN 0370-2693
- Publisher:
- Elsevier
- Country of Publication:
- Netherlands
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Debnath, Dipsikha, Gainer, James S., and Matchev, Konstantin T. Discoveries far from the lamppost with matrix elements and ranking. Netherlands: N. p., 2015.
Web. doi:10.1016/j.physletb.2015.02.020.
Debnath, Dipsikha, Gainer, James S., & Matchev, Konstantin T. Discoveries far from the lamppost with matrix elements and ranking. Netherlands. https://doi.org/10.1016/j.physletb.2015.02.020
Debnath, Dipsikha, Gainer, James S., and Matchev, Konstantin T. Wed .
"Discoveries far from the lamppost with matrix elements and ranking". Netherlands. https://doi.org/10.1016/j.physletb.2015.02.020.
@article{osti_1198585,
title = {Discoveries far from the lamppost with matrix elements and ranking},
author = {Debnath, Dipsikha and Gainer, James S. and Matchev, Konstantin T.},
abstractNote = {The prevalence of null results in searches for new physics at the LHC motivates the effort to make these searches as model-independent as possible. We describe procedures for adapting the Matrix Element Method for situations where the signal hypothesis is not known a priori. We also present general and intuitive approaches for performing analyses and presenting results, which involve the flattening of background distributions using likelihood information. The first flattening method involves ranking events by background matrix element, the second involves quantile binning with respect to likelihood (and other) variables, and the third method involves reweighting histograms by the inverse of the background distribution.},
doi = {10.1016/j.physletb.2015.02.020},
journal = {Physics Letters B},
number = C,
volume = 743,
place = {Netherlands},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}
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https://doi.org/10.1016/j.physletb.2015.02.020
https://doi.org/10.1016/j.physletb.2015.02.020
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