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Charged Higgs boson in the W± Higgs channel at the Large Hadron Collider

Charged Higgs boson in the W± Higgs channel at the Large Hadron Collider
Charged Higgs boson in the W± Higgs channel at the Large Hadron Collider
In light of the recent discovery of a neutral Higgs boson, $H_{\rm obs}$, with a mass near 125 GeV, we reassess the LHC discovery potential of a charged Higgs boson, $H^\pm$, in the $W^\pm H_{\rm obs}$ decay channel. This decay channel can be particularly important for a $H^\pm$ heavier than the top quark, when it is produced through the $pp \rightarrow tH^\pm$ process. The knowledge of the mass of $H_{\rm obs}$ provides an additional handle in the kinematic selection when reconstructing a Breit-Wigner resonance in the $H_{\rm obs} \rightarrow b\bar{b}$ decay channel. We consider some extensions of the Standard Model Higgs sector, with and without supersymmetry, and perform a dedicated signal-to-background analysis to test the scope of this channel for the LHC running at the design energy (14 TeV), for 300/fb (standard) and 3000/fb (high) integrated luminosities. We find that, while this channel does not show much promise for a supersymmetric $H^\pm$ state, significant portions of the parameter spaces of several two-Higgs doublet models are testable.
hep-ph
0550-3213
420-442
Enberg, Rikard
ec453f82-1f21-4dd7-9ad6-ff39b1a0c895
Klemm, William
544edc9f-d55c-410a-a189-81dbf320c0e8
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, Shoaib
9e440f1d-64a4-4f6c-9b55-6c13bb544dcd
Wouda, Glenn
4c428984-0189-4bee-ad3a-49129074341e
Enberg, Rikard
ec453f82-1f21-4dd7-9ad6-ff39b1a0c895
Klemm, William
544edc9f-d55c-410a-a189-81dbf320c0e8
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Munir, Shoaib
9e440f1d-64a4-4f6c-9b55-6c13bb544dcd
Wouda, Glenn
4c428984-0189-4bee-ad3a-49129074341e

Enberg, Rikard, Klemm, William, Moretti, Stefano, Munir, Shoaib and Wouda, Glenn (2015) Charged Higgs boson in the W± Higgs channel at the Large Hadron Collider. Nuclear Physics B, 893, 420-442. (doi:10.1016/j.nuclphysb.2015.02.001).

Record type: Article

Abstract

In light of the recent discovery of a neutral Higgs boson, $H_{\rm obs}$, with a mass near 125 GeV, we reassess the LHC discovery potential of a charged Higgs boson, $H^\pm$, in the $W^\pm H_{\rm obs}$ decay channel. This decay channel can be particularly important for a $H^\pm$ heavier than the top quark, when it is produced through the $pp \rightarrow tH^\pm$ process. The knowledge of the mass of $H_{\rm obs}$ provides an additional handle in the kinematic selection when reconstructing a Breit-Wigner resonance in the $H_{\rm obs} \rightarrow b\bar{b}$ decay channel. We consider some extensions of the Standard Model Higgs sector, with and without supersymmetry, and perform a dedicated signal-to-background analysis to test the scope of this channel for the LHC running at the design energy (14 TeV), for 300/fb (standard) and 3000/fb (high) integrated luminosities. We find that, while this channel does not show much promise for a supersymmetric $H^\pm$ state, significant portions of the parameter spaces of several two-Higgs doublet models are testable.

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Accepted/In Press date: 5 February 2015
e-pub ahead of print date: 18 February 2015
Published date: April 2015
Additional Information: 26 pages, 11 figures. Typos corrected and some references added. Version to appear in NPB
Keywords: hep-ph
Organisations: Theory Group

Identifiers

Local EPrints ID: 411839
URI: http://eprints.soton.ac.uk/id/eprint/411839
ISSN: 0550-3213
PURE UUID: 8cecd010-7d21-458d-a29e-85c928c0dd88

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Date deposited: 27 Jun 2017 16:31
Last modified: 02 Dec 2019 19:01

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