Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector

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A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb<sup>-1</sup> of √s = 13 TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significan...

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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
top quark
supersymmetry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/82147
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-82147
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
top quark
supersymmetry
spellingShingle Ciencias Exactas
Física
hadron-hadron scattering
top quark
supersymmetry
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 a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
topic_facet Ciencias Exactas
Física
hadron-hadron scattering
top quark
supersymmetry
description A search for pair production of a scalar partner of the top quark in events with four or more jets plus missing transverse momentum is presented. An analysis of 36.1 fb<sup>-1</sup> of √s = 13 TeV proton-proton collisions collected using the ATLAS detector at the LHC yields no significant excess over the expected Standard Model background. To interpret the results a simplified supersymmetric model is used where the top squark is assumed to decay via ~t<sub>1</sub> → t(*) ~X<sup>0</sup><sub>1</sub> and ~t<sub>1</sub> → b~X<sup>±</sup><sub>1</sub> → bW(*) ~X<sup>0</sup><sub>1</sub>, where ~X<sup>0</sup><sub>1</sub> (~X<sup>±</sup><sub>1</sub>) denotes the lightest neutralino (chargino). Exclusion limits are placed in terms of the top-squark and neutralino masses. Assuming a branching ratio of 100% to t ~X<sup>0</sup><sub>1</sub>, top-squark masses in the range 450-1000 GeV are excluded for ~X<sup>0</sup><sub>1</sub> masses below 160 GeV. In the case where m<sub>~t<sub>1</sub></sub> ~ m<sub>t</sub> +m<sub>~X<sup>0</sup><sub>1</sub></sub> , top-squark masses in the range 235-590 GeV are excluded.
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 a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
title_short Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
title_full Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
title_fullStr Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
title_full_unstemmed Search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 TeV with the ATLAS detector
title_sort search for a scalar partner of the top quark in the jets plus missing transverse momentum final state at √s = 13 tev with the atlas detector
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/82147
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AT arduhfranciscoanuar searchforascalarpartnerofthetopquarkinthejetsplusmissingtransversemomentumfinalstateats13tevwiththeatlasdetector
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bdutipo_str Repositorios
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