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Very light Higgs Bosons in extended models at the LHC

Very light Higgs Bosons in extended models at the LHC
Very light Higgs Bosons in extended models at the LHC
The Large Electron-Positron (LEP) collider experiments have constrained the mass of the Standard Model (SM) Higgs boson to be above 114.4 GeV. This bound applies to all extensions of the SM where the coupling of a Higgs boson to the Z boson and also the Higgs decay profile do not differ much from the SM one. However, in scenarios with extended Higgs sectors, this coupling can be made very small by a suitable choice of the parameters of the model.

In such cases, the lightest CP-even Higgs boson mass can in turn be made very small. Such a very light Higgs state, with a mass of the order of the Z boson one or even smaller, could have escaped detection at LEP. In this work we perform a detailed parton level study on the feasibility of the detection of such a very light Higgs particle at the Large Hadron Collider (LHC) in the production process pph j → τ+- j, where j is a resolved jet. We conclude that there are several models where such a Higgs state could be detected at the LHC with early data.
high energy physics, phenomenology
2470-0029
95006
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Guedes, Renato
7f791671-b446-48ae-896e-399c6c06152d
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Santos, Rui
7c5725f6-c057-46e1-96ff-6061c75e6f17
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Guedes, Renato
7f791671-b446-48ae-896e-399c6c06152d
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Santos, Rui
7c5725f6-c057-46e1-96ff-6061c75e6f17

Belyaev, Alexander, Guedes, Renato, Moretti, Stefano and Santos, Rui (2010) Very light Higgs Bosons in extended models at the LHC. Physical Review D, 81 (9), 95006. (doi:10.1103/PhysRevD.81.095006).

Record type: Article

Abstract

The Large Electron-Positron (LEP) collider experiments have constrained the mass of the Standard Model (SM) Higgs boson to be above 114.4 GeV. This bound applies to all extensions of the SM where the coupling of a Higgs boson to the Z boson and also the Higgs decay profile do not differ much from the SM one. However, in scenarios with extended Higgs sectors, this coupling can be made very small by a suitable choice of the parameters of the model.

In such cases, the lightest CP-even Higgs boson mass can in turn be made very small. Such a very light Higgs state, with a mass of the order of the Z boson one or even smaller, could have escaped detection at LEP. In this work we perform a detailed parton level study on the feasibility of the detection of such a very light Higgs particle at the Large Hadron Collider (LHC) in the production process pph j → τ+- j, where j is a resolved jet. We conclude that there are several models where such a Higgs state could be detected at the LHC with early data.

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Published date: 2010
Keywords: high energy physics, phenomenology

Identifiers

Local EPrints ID: 153795
URI: http://eprints.soton.ac.uk/id/eprint/153795
ISSN: 2470-0029
PURE UUID: 18ea004a-1d62-4e72-a507-430bc00ae7b5
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 21 May 2010 08:19
Last modified: 07 Oct 2020 01:53

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Contributors

Author: Renato Guedes
Author: Stefano Moretti
Author: Rui Santos

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