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Title: 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:
 [1];  [1];  [1]
  1. Univ. of Florida, Gainesville, FL (United States). Physics Dept.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (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:
Journal Article: Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 743; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
United States
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. United States: 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. United States. doi: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". United States. doi: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. Section B},
number = C,
volume = 743,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.physletb.2015.02.020

Citation Metrics:
Cited by: 1 work
Citation information provided by
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