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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, Mike, Moortgat, Filip, Moretti, Stefano
Lenguaje:eng
Publicado: 2003
Materias:
Acceso en línea:https://dx.doi.org/10.1140/epjc/s2003-01300-8
http://cds.cern.ch/record/608738
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author Bisset, Mike
Moortgat, Filip
Moretti, Stefano
author_facet Bisset, Mike
Moortgat, Filip
Moretti, Stefano
author_sort Bisset, Mike
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 where the charged Higgs is heavier than the top quark, with intermediate values of tan beta. In this region, the identification of charged Higgs bosons 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 charged Higgs decays into neutralinos and charginos, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, a small mu parameter 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.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2003
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spelling cern-6087382023-03-14T18:15:44Zdoi:10.1140/epjc/s2003-01300-8http://cds.cern.ch/record/608738engBisset, MikeMoortgat, FilipMoretti, StefanoTrilepton + top signal from chargino-neutralino decays of MSSM charged Higgs bosons at the LHCParticle Physics - PhenomenologyWe 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 where the charged Higgs is heavier than the top quark, with intermediate values of tan beta. In this region, the identification of charged Higgs bosons 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 charged Higgs decays into neutralinos and charginos, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, a small mu parameter 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.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 where the charged Higgs is heavier than the top quark, with intermediate values of tan beta. In this region, the identification of charged Higgs bosons 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 charged Higgs decays into neutralinos and charginos, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, a small mu parameter 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.hep-ph/0303093TUHEP-TH-02138CERN-TH-2002-173IPPP-02-47DCPT-02-94SHEP-03-03CMS-NOTE-2003-004CMS-NOTE-2003-004CERN-TH-2002-173DCPT-2002-94IPPP-2002-47TUHEP-TH-2002-138oai:cds.cern.ch:6087382003-03-12
spellingShingle Particle Physics - Phenomenology
Bisset, Mike
Moortgat, Filip
Moretti, Stefano
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 - Phenomenology
url https://dx.doi.org/10.1140/epjc/s2003-01300-8
http://cds.cern.ch/record/608738
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AT moortgatfilip trileptontopsignalfromcharginoneutralinodecaysofmssmchargedhiggsbosonsatthelhc
AT morettistefano trileptontopsignalfromcharginoneutralinodecaysofmssmchargedhiggsbosonsatthelhc