Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC

This paper explores the effects of finite width in processes of pair production of an extra heavy quark with charge 2/3 (top partner) and its subsequent decay into a bosonic dark matter (DM) candidate—either scalar or vector—and SM up-type quarks at the Large Hadron Collider (LHC). This dynamics has...

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Detalles Bibliográficos
Autores principales: Moretti, Stefano, O'Brien, Dermot, Panizzi, Luca, Prager, Hugo
Lenguaje:eng
Publicado: 2017
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.96.035033
http://cds.cern.ch/record/2278601
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author Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
Prager, Hugo
author_facet Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
Prager, Hugo
author_sort Moretti, Stefano
collection CERN
description This paper explores the effects of finite width in processes of pair production of an extra heavy quark with charge 2/3 (top partner) and its subsequent decay into a bosonic dark matter (DM) candidate—either scalar or vector—and SM up-type quarks at the Large Hadron Collider (LHC). This dynamics has been ignored so far in standard experimental searches of heavy quarks decaying to DM and we assess herein the regions of validity of current approaches, based on the assumption that the extra quarks have a narrow width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
record_format invenio
spelling cern-22786012023-05-24T02:47:13Zdoi:10.1103/PhysRevD.96.035033http://cds.cern.ch/record/2278601engMoretti, StefanoO'Brien, DermotPanizzi, LucaPrager, HugoProduction of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHChep-phParticle Physics - PhenomenologyThis paper explores the effects of finite width in processes of pair production of an extra heavy quark with charge 2/3 (top partner) and its subsequent decay into a bosonic dark matter (DM) candidate—either scalar or vector—and SM up-type quarks at the Large Hadron Collider (LHC). This dynamics has been ignored so far in standard experimental searches of heavy quarks decaying to DM and we assess herein the regions of validity of current approaches, based on the assumption that the extra quarks have a narrow width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.This paper explores the effects of finite width in processes of pair production of an extra heavy quark with charge 2/3 (top partner) and its subsequent decay into a bosonic Dark Matter (DM) candidate -- either scalar or vector -- and SM up-type quarks at the Large Hadron Collider (LHC). This dynamics has been ignored so far in standard experimental searches of heavy quarks decaying to DM and we assess herein the regions of validity of current approaches, based on the assumption that the extra quarks have a narrow width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.arXiv:1705.07675oai:cds.cern.ch:22786012017-05-22
spellingShingle hep-ph
Particle Physics - Phenomenology
Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
Prager, Hugo
Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title_full Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title_fullStr Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title_full_unstemmed Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title_short Production of extra quarks decaying to Dark Matter beyond the Narrow Width Approximation at the LHC
title_sort production of extra quarks decaying to dark matter beyond the narrow width approximation at the lhc
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.96.035033
http://cds.cern.ch/record/2278601
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AT obriendermot productionofextraquarksdecayingtodarkmatterbeyondthenarrowwidthapproximationatthelhc
AT panizziluca productionofextraquarksdecayingtodarkmatterbeyondthenarrowwidthapproximationatthelhc
AT pragerhugo productionofextraquarksdecayingtodarkmatterbeyondthenarrowwidthapproximationatthelhc

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