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

Trilepton + top signal from chargino neutralino decays of MSSM charged Higgs bosons at the LHC
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 attention on the region of parameter space with m H± > m t and intermediate values of tan β , where identification of H± 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±  → χ~±1,2 χ~01,2,3,4  decays, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, small |μ| 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.
1434-6044
419-434
Bisset, M.
9821bb62-6af3-4c74-80b4-c5fcda5099ea
Moortgat, F.
03460f83-c228-4b8b-afe7-a2121ba34505
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Bisset, M.
9821bb62-6af3-4c74-80b4-c5fcda5099ea
Moortgat, F.
03460f83-c228-4b8b-afe7-a2121ba34505
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614

Bisset, M., Moortgat, F. and Moretti, S. (2003) Trilepton + top signal from chargino neutralino decays of MSSM charged Higgs bosons at the LHC. The European Physical Journal C, 30 (3), 419-434. (doi:10.1140/epjc/s2003-01300-8).

Record type: Article

Abstract

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 H± > m t and intermediate values of tan β , where identification of H± 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±  → χ~±1,2 χ~01,2,3,4  decays, can be made viable over a large variety of initially overwhelming SM and MSSM backgrounds, provided MSSM input parameters are favourable: notably, small |μ| 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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Published date: October 2003

Identifiers

Local EPrints ID: 57087
URI: https://eprints.soton.ac.uk/id/eprint/57087
ISSN: 1434-6044
PURE UUID: 7785ceef-2ea6-413d-a206-38e10a1e64ab

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Date deposited: 14 Aug 2008
Last modified: 26 Jul 2018 16:30

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Contributors

Author: M. Bisset
Author: F. Moortgat
Author: S. Moretti

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