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Towards a no-lose theorem for NMSSM Higgs discovery at the LHC

Towards a no-lose theorem for NMSSM Higgs discovery at the LHC
Towards a no-lose theorem for NMSSM Higgs discovery at the LHC
We scan the parameter space of the NMSSM for the observability of a Higgs boson at the LHC with 300 fb-1 integrated luminosity per detector, taking the present LEP constraints into account. We focus on the regions of parameter space for which none of the usually considered LHC detection modes are viable due to the fact that the only light non-singlet (and, therefore, potentially visible) Higgs boson, h, decays mainly to two CP-odd light Higgs bosons, h → aa. We simulate the WW → h → aa detection mode. We find that this signal may be detectable at the LHC as a signal/background ~ 600/600 bump in the tail of a rapidly falling mass distribution. If further study gives us confidence that the shape of the background tail is predictable, then we can conclude that NMSSM Higgs detection at the LHC will be possible throughout all of parameter space by combining this signal with the usual detection modes previously simulated by ATLAS and CMS. We also show that this WW → h → aa signal will be highly visible at the LC due to its cleaner environment and high luminosity. We present a study of the production modes and decay channels of interest at the LC.
1-18
Ellwanger, Ulrich
13d3bd7e-8699-4502-be9f-e6327b4aab22
Gunion, John F.
c0507119-8e06-41da-b415-77c3783726fa
Hugonie, Cyril
7dfcb431-4486-4299-8fb0-32adabd4234a
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Ellwanger, Ulrich
13d3bd7e-8699-4502-be9f-e6327b4aab22
Gunion, John F.
c0507119-8e06-41da-b415-77c3783726fa
Hugonie, Cyril
7dfcb431-4486-4299-8fb0-32adabd4234a
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614

Ellwanger, Ulrich, Gunion, John F., Hugonie, Cyril and Moretti, Stefano (2003) Towards a no-lose theorem for NMSSM Higgs discovery at the LHC. Pre-print, 1-18.

Record type: Article

Abstract

We scan the parameter space of the NMSSM for the observability of a Higgs boson at the LHC with 300 fb-1 integrated luminosity per detector, taking the present LEP constraints into account. We focus on the regions of parameter space for which none of the usually considered LHC detection modes are viable due to the fact that the only light non-singlet (and, therefore, potentially visible) Higgs boson, h, decays mainly to two CP-odd light Higgs bosons, h → aa. We simulate the WW → h → aa detection mode. We find that this signal may be detectable at the LHC as a signal/background ~ 600/600 bump in the tail of a rapidly falling mass distribution. If further study gives us confidence that the shape of the background tail is predictable, then we can conclude that NMSSM Higgs detection at the LHC will be possible throughout all of parameter space by combining this signal with the usual detection modes previously simulated by ATLAS and CMS. We also show that this WW → h → aa signal will be highly visible at the LC due to its cleaner environment and high luminosity. We present a study of the production modes and decay channels of interest at the LC.

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More information

Published date: 12 May 2003
Additional Information: arXiv:hep-ph/0305109v1

Identifiers

Local EPrints ID: 57188
URI: http://eprints.soton.ac.uk/id/eprint/57188
PURE UUID: c00cbb4c-5f7f-4718-81bf-6bc17a8e037b

Catalogue record

Date deposited: 13 Aug 2008
Last modified: 09 Nov 2021 09:52

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Contributors

Author: Ulrich Ellwanger
Author: John F. Gunion
Author: Cyril Hugonie
Author: Stefano Moretti

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