Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data

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A search for new phenomena in final states characterized by high jet multiplicity, an isolated lepton (electron or muon) and either zero or at least three b-tagged jets is presented. The search uses 36.1 fb-1 of √s = 13TeV proton-proton collision data collected by the ATLAS experiment at the Large...

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Autores principales: Alconada Verzini, María Josefina, Alonso, Francisco, Arduh, Francisco Anuar, Dova, María Teresa, Hoya, Joaquín, Monticelli, Fernando Gabriel, Wahlberg, Hernán Pablo, The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Exactas
Física
hadron-hadron scattering
lepton
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82170
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82170
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
hadron-hadron scattering
lepton
spellingShingle Ciencias Exactas
Física
hadron-hadron scattering
lepton
Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
topic_facet Ciencias Exactas
Física
hadron-hadron scattering
lepton
description A search for new phenomena in final states characterized by high jet multiplicity, an isolated lepton (electron or muon) and either zero or at least three b-tagged jets is presented. The search uses 36.1 fb-1 of √s = 13TeV proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider in 2015 and 2016. The dominant sources of background are estimated using parameterized extrapolations, based on observables at medium jet multiplicity, to predict the b-tagged jet multiplicity distribution at the higher jet multiplicities used in the search. No signi cant excess over the Standard Model expectation is observed and 95% con fidence-level limits are extracted constraining four simpli ed models of R-parity-violating supersymmetry that feature either gluino or top-squark pair production. The exclusion limits reach as high as 2.1 TeV in gluino mass and 1.2TeV in top-squark mass in the models considered. In addition, an upper limit is set on the cross-section for Standard Model t¯tt¯t production of 60 fb (6.5 x the Standard Model prediction) at 95% con dence level. Finally, model-independent limits are set on the contribution from new phenomena to the signal-region yields.
format Articulo
Articulo
author Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_facet Alconada Verzini, María Josefina
Alonso, Francisco
Arduh, Francisco Anuar
Dova, María Teresa
Hoya, Joaquín
Monticelli, Fernando Gabriel
Wahlberg, Hernán Pablo
The ATLAS Collaboration
author_sort Alconada Verzini, María Josefina
title Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
title_short Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
title_full Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
title_fullStr Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
title_full_unstemmed Search for new phenomena in a lepton plus high jet multiplicity final state with the ATLAS experiment using √s = 13 TeV proton-proton collision data
title_sort search for new phenomena in a lepton plus high jet multiplicity final state with the atlas experiment using √s = 13 tev proton-proton collision data
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/82170
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