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Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC

We perform for the Large Hadron Collider (LHC) a detailed study of charged Higgs boson production via the top-bottom quark associated mode followed by decays into a chargino and a neutralino, with masses and couplings as given by the general minimal supersymmetric standard model (MSSM). We focus our...

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Detalles Bibliográficos
Autores principales: Bisset, M, Moortgat, F, Moretti, S
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:http://cds.cern.ch/record/807899
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author Bisset, M
Moortgat, F
Moretti, S
author_facet Bisset, M
Moortgat, F
Moretti, S
author_sort Bisset, M
collection CERN
description We perform for the Large Hadron Collider (LHC) a detailed study of charged Higgs boson production via the top-bottom quark associated mode followed by decays into a chargino and a neutralino, with masses and couplings as given by the general minimal supersymmetric standard model (MSSM). We focus our attention on the region of parameter space with m sub H sup sub+- > m sub t and intermediate values of tan beta, where identification of H sup+- via decays into standard model (SM) particles has proven to be ineffective. Modelling the CMS detector, we find that a signature consisting of three hard leptons accompanied by a hadronically reconstructed top quark plus substantial missing transverse energy, which may result from H sup+-->X sub 1 sub , sub 2 sup+-X sub 1 sub , sub 2 sub , sub 3 sub , sub 4 sup 0 decays, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, small vertical stroke mu vertical stroke and light sleptons are important prerequisites. We quantify these statements by performing a fairly extensive scan of the parameter space, including realistic hadron-level simulations, and delineate some potential discovery regions. (orig.)
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-8078992019-09-30T06:29:59Zhttp://cds.cern.ch/record/807899engBisset, MMoortgat, FMoretti, STrilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHCParticle PhysicsWe perform for the Large Hadron Collider (LHC) a detailed study of charged Higgs boson production via the top-bottom quark associated mode followed by decays into a chargino and a neutralino, with masses and couplings as given by the general minimal supersymmetric standard model (MSSM). We focus our attention on the region of parameter space with m sub H sup sub+- > m sub t and intermediate values of tan beta, where identification of H sup+- via decays into standard model (SM) particles has proven to be ineffective. Modelling the CMS detector, we find that a signature consisting of three hard leptons accompanied by a hadronically reconstructed top quark plus substantial missing transverse energy, which may result from H sup+-->X sub 1 sub , sub 2 sup+-X sub 1 sub , sub 2 sub , sub 3 sub , sub 4 sup 0 decays, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, small vertical stroke mu vertical stroke and light sleptons are important prerequisites. We quantify these statements by performing a fairly extensive scan of the parameter space, including realistic hadron-level simulations, and delineate some potential discovery regions. (orig.)oai:cds.cern.ch:8078992003
spellingShingle Particle Physics
Bisset, M
Moortgat, F
Moretti, S
Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title_full Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title_fullStr Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title_full_unstemmed Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title_short Trilepton+top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHC
title_sort trilepton+top signal from chargino-neutralino decays of mssm charged higgs bosons at the lhc
topic Particle Physics
url http://cds.cern.ch/record/807899
work_keys_str_mv AT bissetm trileptontopsignalfromcharginoneutralinodecaysofmssmchargedhiggsbosonsatthelhc
AT moortgatf trileptontopsignalfromcharginoneutralinodecaysofmssmchargedhiggsbosonsatthelhc
AT morettis trileptontopsignalfromcharginoneutralinodecaysofmssmchargedhiggsbosonsatthelhc