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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2016
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Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/86270 |
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I19-R120-10915-86270 |
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Universidad Nacional de La Plata |
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I-19 |
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R-120 |
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SEDICI (UNLP) |
language |
Inglés |
topic |
Física Colored scalar Mass |
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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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1764820489499312129 |