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Title: Identification of hadronically decaying W bosons and top quarks using multivariate techniques at ATLAS

Abstract

By colliding protons and examining particles emitted from the collisions, the Large Hadron Collider aims to study the interactions of quarks and gluons at the highest energy accessible in a controlled experimental way. In such collisions, W bosons or top quarks which have TeV scale momentum can be accessible. Reconstructing such boosted jets are becoming important. In particular, the ability to identify original particle that decays to quarks against normal QCD jets plays a central role in various searches at high energy scale. This is typically done by the use of a single physically motivated observable constructed from the constituents of the jet. In this contribution, multiple complementary observables are combined using boosted decision trees and neural networks to increase the ability to distinguish W bosons and top quarks from light quark jets in the ATLAS experiment.

Authors:
 [1]
  1. Waseda Univ., Tokyo (Japan)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
ATLAS Collaboration
OSTI Identifier:
1544183
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Conference Series
Additional Journal Information:
Journal Volume: 1085; Journal ID: ISSN 1742-6588
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Nitta, Tatsumi. Identification of hadronically decaying W bosons and top quarks using multivariate techniques at ATLAS. United States: N. p., 2018. Web. doi:10.1088/1742-6596/1085/4/042012.
Nitta, Tatsumi. Identification of hadronically decaying W bosons and top quarks using multivariate techniques at ATLAS. United States. doi:10.1088/1742-6596/1085/4/042012.
Nitta, Tatsumi. Sat . "Identification of hadronically decaying W bosons and top quarks using multivariate techniques at ATLAS". United States. doi:10.1088/1742-6596/1085/4/042012. https://www.osti.gov/servlets/purl/1544183.
@article{osti_1544183,
title = {Identification of hadronically decaying W bosons and top quarks using multivariate techniques at ATLAS},
author = {Nitta, Tatsumi},
abstractNote = {By colliding protons and examining particles emitted from the collisions, the Large Hadron Collider aims to study the interactions of quarks and gluons at the highest energy accessible in a controlled experimental way. In such collisions, W bosons or top quarks which have TeV scale momentum can be accessible. Reconstructing such boosted jets are becoming important. In particular, the ability to identify original particle that decays to quarks against normal QCD jets plays a central role in various searches at high energy scale. This is typically done by the use of a single physically motivated observable constructed from the constituents of the jet. In this contribution, multiple complementary observables are combined using boosted decision trees and neural networks to increase the ability to distinguish W bosons and top quarks from light quark jets in the ATLAS experiment.},
doi = {10.1088/1742-6596/1085/4/042012},
journal = {Journal of Physics. Conference Series},
number = ,
volume = 1085,
place = {United States},
year = {2018},
month = {9}
}

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Works referenced in this record:

Identification of boosted, hadronically decaying W bosons and comparisons with ATLAS data taken at $$\sqrt{s} = 8$$ s = 8  TeV
journal, March 2016


Event generation with SHERPA 1.1
journal, February 2009


A brief introduction to PYTHIA 8.1
journal, June 2008

  • Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter
  • Computer Physics Communications, Vol. 178, Issue 11
  • DOI: 10.1016/j.cpc.2008.01.036