Measuring CP-violating observables in rare top decays at the LHC

In this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new phy...

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Autores principales: Saha, Pratishruti, Kiers, Ken, Bhattacharya, Bhubanjyoti, London, David, Szynkman, Alejandro Andrés, Melendez, Jordan
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Ciencias Exactas
Física
CP-violating
LHC
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/86970
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-86970
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
CP-violating
LHC
spellingShingle Ciencias Exactas
Física
CP-violating
LHC
Saha, Pratishruti
Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
Measuring CP-violating observables in rare top decays at the LHC
topic_facet Ciencias Exactas
Física
CP-violating
LHC
description In this paper we consider CP-violating new-physics contributions to the decay t→bb¯c. We examine the prospects for detecting such new physics at the LHC, which requires studying the process gg→t(→bb¯c)t¯(→b¯ℓν¯). We find two observables that can be used to reveal the presence of CP-violating new physics in t→bb¯c. They are (i) the partial-rate asymmetry and (ii) the triple-product correlations involving the momenta of various particles associated with the interaction. A Monte Carlo analysis is performed to determine how well these observables can be used to detect the presence of new physics, and to measure its parameters. We find that there is little difficulty in extracting the value of the relevant new-physics parameter from the partial-rate asymmetry. For the triple-product correlations, we test multiple strategies that can be used for the extraction of the corresponding combination of new-physics parameters.
format Articulo
Articulo
author Saha, Pratishruti
Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
author_facet Saha, Pratishruti
Kiers, Ken
Bhattacharya, Bhubanjyoti
London, David
Szynkman, Alejandro Andrés
Melendez, Jordan
author_sort Saha, Pratishruti
title Measuring CP-violating observables in rare top decays at the LHC
title_short Measuring CP-violating observables in rare top decays at the LHC
title_full Measuring CP-violating observables in rare top decays at the LHC
title_fullStr Measuring CP-violating observables in rare top decays at the LHC
title_full_unstemmed Measuring CP-violating observables in rare top decays at the LHC
title_sort measuring cp-violating observables in rare top decays at the lhc
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/86970
work_keys_str_mv AT sahapratishruti measuringcpviolatingobservablesinraretopdecaysatthelhc
AT kiersken measuringcpviolatingobservablesinraretopdecaysatthelhc
AT bhattacharyabhubanjyoti measuringcpviolatingobservablesinraretopdecaysatthelhc
AT londondavid measuringcpviolatingobservablesinraretopdecaysatthelhc
AT szynkmanalejandroandres measuringcpviolatingobservablesinraretopdecaysatthelhc
AT melendezjordan measuringcpviolatingobservablesinraretopdecaysatthelhc
bdutipo_str Repositorios
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