Search for new physics in rare top decays: t¯t spin correlations and other observables

In this paper we study new-physics contributions to the top-quark decay t → bbc. We search for ways of detecting such new physics via measurements at the LHC. As top quarks are mainly produced at the LHC in tt production via gluon fusion, we analyze the process gg → tt → bbc bℓν . We find six obser...

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Detalles Bibliográficos
Autores principales: Kiers, Ken, Saha, Pratishruti, Szynkman, Alejandro Andrés, London, David, Judge, Samuel, Melendez, Jordan
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2014
Materias:
Física
Top decays
New physics
LHC
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/100279
https://ri.conicet.gov.ar/11336/34045
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-100279
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Física
Top decays
New physics
LHC
spellingShingle Física
Top decays
New physics
LHC
Kiers, Ken
Saha, Pratishruti
Szynkman, Alejandro Andrés
London, David
Judge, Samuel
Melendez, Jordan
Search for new physics in rare top decays: t¯t spin correlations and other observables
topic_facet Física
Top decays
New physics
LHC
description In this paper we study new-physics contributions to the top-quark decay t → bbc. We search for ways of detecting such new physics via measurements at the LHC. As top quarks are mainly produced at the LHC in tt production via gluon fusion, we analyze the process gg → tt → bbc bℓν . We find six observables that can be used to reveal the presence of new physics in t → bbc. Three are invariant mass-squared distributions involving two of the final-state particles in the top decay, and three are angular correlations between the final-state quarks coming from the t decay and the ℓ − coming from the t decay. The angular correlations are related to the t t spin correlation.
format Articulo
Preprint
author Kiers, Ken
Saha, Pratishruti
Szynkman, Alejandro Andrés
London, David
Judge, Samuel
Melendez, Jordan
author_facet Kiers, Ken
Saha, Pratishruti
Szynkman, Alejandro Andrés
London, David
Judge, Samuel
Melendez, Jordan
author_sort Kiers, Ken
title Search for new physics in rare top decays: t¯t spin correlations and other observables
title_short Search for new physics in rare top decays: t¯t spin correlations and other observables
title_full Search for new physics in rare top decays: t¯t spin correlations and other observables
title_fullStr Search for new physics in rare top decays: t¯t spin correlations and other observables
title_full_unstemmed Search for new physics in rare top decays: t¯t spin correlations and other observables
title_sort search for new physics in rare top decays: t¯t spin correlations and other observables
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/100279
https://ri.conicet.gov.ar/11336/34045
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