Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC

This paper explores the effects of finite width in processes of pair production of a heavy eXtra Quark (XQ) with charge 2/3 and its subsequent decay into a Dark Matter (DM) candidate – either scalar or vector – and Standard Model (SM) up-type quarks at the Large Hadron Collider (LHC). This dynamics...

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Detalles Bibliográficos
Autores principales: Prager, Hugo, Moretti, Stefano, O'Brien, Dermot, Panizzi, Luca
Lenguaje:eng
Publicado: SISSA 2017
Materias:
hep-ph
Particle Physics - Phenomenology
Acceso en línea:https://dx.doi.org/10.22323/1.297.0300
http://cds.cern.ch/record/2272123
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author Prager, Hugo
Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
author_facet Prager, Hugo
Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
author_sort Prager, Hugo
collection CERN
description This paper explores the effects of finite width in processes of pair production of a heavy eXtra Quark (XQ) with charge 2/3 and its subsequent decay into a Dark Matter (DM) candidate – either scalar or vector – and Standard Model (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 XQ has a narrow width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.
id cern-2272123
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2017
publisher SISSA
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spelling cern-22721232023-05-24T02:57:33Zdoi:10.22323/1.297.0300http://cds.cern.ch/record/2272123engPrager, HugoMoretti, StefanoO'Brien, DermotPanizzi, LucaLarge width effects in processes of production of extra quarks decaying to Dark Matter at the LHChep-phParticle Physics - PhenomenologyThis paper explores the effects of finite width in processes of pair production of a heavy eXtra Quark (XQ) with charge 2/3 and its subsequent decay into a Dark Matter (DM) candidate – either scalar or vector – and Standard Model (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 XQ has 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 a heavy eXtra Quark (XQ) with charge 2/3 and its subsequent decay into a Dark Matter (DM) candidate -- either scalar or vector -- and Standard Model (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 XQ has a narrow width. Further, we discuss the configurations of masses, widths and couplings where the latter breaks down.SISSAarXiv:1706.04007oai:cds.cern.ch:22721232017-06-13
spellingShingle hep-ph
Particle Physics - Phenomenology
Prager, Hugo
Moretti, Stefano
O'Brien, Dermot
Panizzi, Luca
Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title_full Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title_fullStr Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title_full_unstemmed Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title_short Large width effects in processes of production of extra quarks decaying to Dark Matter at the LHC
title_sort large width effects in processes of production of extra quarks decaying to dark matter at the lhc
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.22323/1.297.0300
http://cds.cern.ch/record/2272123
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AT morettistefano largewidtheffectsinprocessesofproductionofextraquarksdecayingtodarkmatteratthelhc
AT obriendermot largewidtheffectsinprocessesofproductionofextraquarksdecayingtodarkmatteratthelhc
AT panizziluca largewidtheffectsinprocessesofproductionofextraquarksdecayingtodarkmatteratthelhc

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