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Light charged Higgs boson with dominant decay to a charm quark and a bottom quark and its search at LEP2 and future e+e- colliders

Light charged Higgs boson with dominant decay to a charm quark and a bottom quark and its search at LEP2 and future e+e- colliders
Light charged Higgs boson with dominant decay to a charm quark and a bottom quark and its search at LEP2 and future e+e- colliders
The possibility of a light charged Higgs boson H± that decays predominantly to a charm quark and a bottom quark (cb) and with a mass in the range 80  GeV≤MH±≤90  GeV is studied in the context of a three-Higgs doublet model (3HDM). Searches for this decay at the Large Hadron Collider do not have sensitivity to this mass region at present. It is shown that the searches for H± at LEP2 could be supplemented by either one or two b-tags, which would enable such large branching ratios for H±→cb to be probed in the above mass region. We comment on the possibility of this 3HDM scenario to explain a slight excess in the searches for H± at LEP2, which is best fit by MH± of around 90 GeV, and discuss the prospects for detecting H±→cb decays at future e+e− colliders.
2470-0010
Akeroyd, A.G.
e5de827d-7119-41c2-9f1e-5ef123afdf98
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Song, Muyuan
e4382359-6397-4b91-9101-c44f8a69ec43
Akeroyd, A.G.
e5de827d-7119-41c2-9f1e-5ef123afdf98
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Song, Muyuan
e4382359-6397-4b91-9101-c44f8a69ec43

Akeroyd, A.G., Moretti, Stefano and Song, Muyuan (2020) Light charged Higgs boson with dominant decay to a charm quark and a bottom quark and its search at LEP2 and future e+e- colliders. Physical Review D, 101 (3), [035021]. (doi:10.1103/PhysRevD.101.035021).

Record type: Article

Abstract

The possibility of a light charged Higgs boson H± that decays predominantly to a charm quark and a bottom quark (cb) and with a mass in the range 80  GeV≤MH±≤90  GeV is studied in the context of a three-Higgs doublet model (3HDM). Searches for this decay at the Large Hadron Collider do not have sensitivity to this mass region at present. It is shown that the searches for H± at LEP2 could be supplemented by either one or two b-tags, which would enable such large branching ratios for H±→cb to be probed in the above mass region. We comment on the possibility of this 3HDM scenario to explain a slight excess in the searches for H± at LEP2, which is best fit by MH± of around 90 GeV, and discuss the prospects for detecting H±→cb decays at future e+e− colliders.

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PhysRevD.101.035021 - Version of Record
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Accepted/In Press date: 27 January 2020
e-pub ahead of print date: 18 February 2020
Published date: 18 February 2020

Identifiers

Local EPrints ID: 438077
URI: http://eprints.soton.ac.uk/id/eprint/438077
ISSN: 2470-0010
PURE UUID: e3bfb7ef-4b54-4960-93d6-e0c11c99339d

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Date deposited: 28 Feb 2020 17:30
Last modified: 25 Jan 2021 17:32

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Contributors

Author: A.G. Akeroyd
Author: Stefano Moretti
Author: Muyuan Song

University divisions

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