Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector

This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb$^{−1}$ of pp collisions at $ \sqrt{s}=13 $ TeV collected by the ATLAS experiment at the LHC. The f...

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Detalles Bibliográficos
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:	2018
Materias:	Física Particle physics Physics Electroweak interaction Chargino Atlas experiment Gluino Neutralino Gaugino Pair production Large hadron collider Hadron-Hadron scattering (experiments)
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/124454
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-124454
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Particle physics Physics Electroweak interaction Chargino Atlas experiment Gluino Neutralino Gaugino Pair production Large hadron collider Hadron-Hadron scattering (experiments)
spellingShingle	Física Particle physics Physics Electroweak interaction Chargino Atlas experiment Gluino Neutralino Gaugino Pair production Large hadron collider Hadron-Hadron scattering (experiments) 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 long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
topic_facet	Física Particle physics Physics Electroweak interaction Chargino Atlas experiment Gluino Neutralino Gaugino Pair production Large hadron collider Hadron-Hadron scattering (experiments)
description	This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 fb$^{−1}$ of pp collisions at $ \sqrt{s}=13 $ TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.
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 long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
title_short	Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
title_full	Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
title_fullStr	Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
title_full_unstemmed	Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector
title_sort	search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 tev with the atlas detector
publishDate	2018
url	http://sedici.unlp.edu.ar/handle/10915/124454
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Search for long-lived charginos based on a disappearing-track signature in pp collisions at √s=13 TeV with the ATLAS detector

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