Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector

Abstract: A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at √s=8 TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb −1...

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Guardado en:
Detalles Bibliográficos
Publicado: 2015
Materias:
Hadron-Hadron Scattering
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n8_p_TheATLAScollaboration
http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n8_p_TheATLAScollaboration
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_11266708_v2015_n8_p_TheATLAScollaboration
record_format dspace
spelling paper:paper_11266708_v2015_n8_p_TheATLAScollaboration2023-06-08T16:08:42Z Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector Hadron-Hadron Scattering Abstract: A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at √s=8 TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb −1 . Events are required to have at least three selected lepton candidates, at least two of which must be electrons or muons, while the third may be a hadronically decaying tau. Selected events are categorized based on their lepton flavour content and signal regions are constructed using several kinematic variables of interest. No significant deviations from Standard Model predictions are observed. Model-independent upper limits on contributions from beyond the Standard Model phenomena are provided for each signal region, along with prescription to re-interpret the limits for any model. Constraints are also placed on models predicting doubly charged Higgs bosons and excited leptons. For doubly charged Higgs bosons decaying to eτ or μτ, lower limits on the mass are set at 400 GeV at 95% confidence level. For excited leptons, constraints are provided as functions of both the mass of the excited state and the compositeness scale Λ, with the strongest mass constraints arising in regions where the mass equals Λ. In such scenarios, lower mass limits are set at 3.0 TeV for excited electrons and muons, 2.5 TeV for excited taus, and 1.6 TeV for every excited-neutrino flavour. © 2015, The Author(s). 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n8_p_TheATLAScollaboration http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n8_p_TheATLAScollaboration
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Hadron-Hadron Scattering
spellingShingle Hadron-Hadron Scattering
Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
topic_facet Hadron-Hadron Scattering
description Abstract: A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at √s=8 TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb −1 . Events are required to have at least three selected lepton candidates, at least two of which must be electrons or muons, while the third may be a hadronically decaying tau. Selected events are categorized based on their lepton flavour content and signal regions are constructed using several kinematic variables of interest. No significant deviations from Standard Model predictions are observed. Model-independent upper limits on contributions from beyond the Standard Model phenomena are provided for each signal region, along with prescription to re-interpret the limits for any model. Constraints are also placed on models predicting doubly charged Higgs bosons and excited leptons. For doubly charged Higgs bosons decaying to eτ or μτ, lower limits on the mass are set at 400 GeV at 95% confidence level. For excited leptons, constraints are provided as functions of both the mass of the excited state and the compositeness scale Λ, with the strongest mass constraints arising in regions where the mass equals Λ. In such scenarios, lower mass limits are set at 3.0 TeV for excited electrons and muons, 2.5 TeV for excited taus, and 1.6 TeV for every excited-neutrino flavour. © 2015, The Author(s).
title Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
title_short Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
title_full Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
title_fullStr Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
title_full_unstemmed Search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 TeV with the ATLAS detector
title_sort search for new phenomena in events with three or more charged leptons in pp collisions at √s=8 tev with the atlas detector
publishDate 2015
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_11266708_v2015_n8_p_TheATLAScollaboration
http://hdl.handle.net/20.500.12110/paper_11266708_v2015_n8_p_TheATLAScollaboration
_version_ 1768546361701040128

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