Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector

The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb-1 of integrated luminosity from proton–proton collisions at √s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover...

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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
top squark
leptons
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82160
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82160
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
top squark
leptons
spellingShingle Ciencias Exactas
Física
top squark
leptons
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 direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
topic_facet Ciencias Exactas
Física
top squark
leptons
description The results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using 36.1 fb-1 of integrated luminosity from proton–proton collisions at √s = 13 TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark t and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay t → bχ<sup>±</sup><sub>1</sub> into a b-quark and the lightest chargino with χ<sup>±</sup><sub>1</sub> → Wχ<sup>0</sup><sub>1</sub>, the decay t → tχ<sup>0</sup><sub>1</sub> into an on-shell top quark and the lightest neutralino, the three-body decay t → bWχ<sup>0</sup><sub>1</sub> and the four-body decay t → bℓνχ<sup>0</sup><sub>1</sub>. No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the t and χ<sup>0</sup><sub>1</sub> masses. The results exclude at 95% confidence level t masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches
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 direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
title_short Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
title_full Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
title_fullStr Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
title_full_unstemmed Search for direct top squark pair production in final states with two leptons in √s = 13 TeV pp collisions with the ATLAS detector
title_sort search for direct top squark pair production in final states with two leptons in √s = 13 tev pp collisions with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/82160
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