Long-lived colored scalars at the LHC

We study the collider signatures of a long-lived massive colored scalar transforming trivially under the weak interaction and decaying within the inner sections of a detector such as ATLAS or CMS. In our study, we assume that the colored scalar couples at tree-level to a top quark and a stable fermi...

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Detalles Bibliográficos
Autores principales: Puente, Alejandro de la, Szynkman, Alejandro Andrés
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Física
Colored scalar
Mass
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86270
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86270
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Colored scalar
Mass
spellingShingle Física
Colored scalar
Mass
Puente, Alejandro de la
Szynkman, Alejandro Andrés
Long-lived colored scalars at the LHC
topic_facet Física
Colored scalar
Mass
description We study the collider signatures of a long-lived massive colored scalar transforming trivially under the weak interaction and decaying within the inner sections of a detector such as ATLAS or CMS. In our study, we assume that the colored scalar couples at tree-level to a top quark and a stable fermion, possibly arising from a dark sector or from supersymmetric extensions of the Standard Model. After implementing the latest experimental searches for long-lived colored scalars, we observe a region of parameter space consistent with a colored electroweak-singlet scalar with mass between ∼200–350 GeV and a lifetime between 0.1–1 mm/c together, with a nearly degenerate dark fermion that may be probed at the √s = 13 TeV LHC. We show that a search strategy using a combination of cuts on missing transverse energy and impact parameters can exclude regions of parameter space not accessed by prompt searches. We show that a region of parameter space within our simplified model may naturally arise from the light-stop window regime of supersymmetric extensions of the Standard Model, where a light mostly right-handed stop has a mass slightly larger than the lightest neutralino and decays through a four-body process.
format Articulo
Articulo
author Puente, Alejandro de la
Szynkman, Alejandro Andrés
author_facet Puente, Alejandro de la
Szynkman, Alejandro Andrés
author_sort Puente, Alejandro de la
title Long-lived colored scalars at the LHC
title_short Long-lived colored scalars at the LHC
title_full Long-lived colored scalars at the LHC
title_fullStr Long-lived colored scalars at the LHC
title_full_unstemmed Long-lived colored scalars at the LHC
title_sort long-lived colored scalars at the lhc
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86270
work_keys_str_mv AT puentealejandrodela longlivedcoloredscalarsatthelhc
AT szynkmanalejandroandres longlivedcoloredscalarsatthelhc
bdutipo_str Repositorios
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