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Identifying a light charged Higgs boson at the LHC Run II
Abdelmalek Essaadi University, Morocco.
Cadi Ayyad University and Faculté Polydisciplinaire de Safi, Morocco.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. (Theoretical high energy physics)ORCID iD: 0000-0003-0452-0671
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics. School of Physics and Astronomy, University of Manchester, UK.
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2017 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 774, p. 591-598Article in journal (Refereed) Published
Abstract [en]

We analyse the phenomenological implications of a light Higgs boson, h, within the CP-conserving 2-Higgs Doublet Model (2HDM) Type-I, for the detection prospects of the charged H± state at Run II of the Large Hadron Collider (LHC), assuming s√=13 TeV as energy and O(100 fb−1) as luminosity. When sufficiently light, this h state can open up the bosonic decay channel H±→W±(∗)h, which may have a branching ratio significantly exceeding those of the H±→τν and H±→cs channels. We perform a broad scan of the 2HDM Type-I parameter space, assuming the heavier of the two CP-even Higgs bosons, H, to be the observed SM-like state with a mass near 125 GeV. Through these scans we highlight regions in which mH±<mt+mb that are still consistent with the most recent limits from experimental searches. We find in these regions that, when the H±→W±(∗)h decay mode is the dominant one, the h can be highly fermiophobic, with a considerably large decay rate in the γγ channel. This can result in the total cross section of the σ(pp→H±h→W±(∗)+4γ) process reaching up to O(100 fb). We therefore investigate the possibility of observing this spectacular signal at the LHC Run II.

Place, publisher, year, edition, pages
2017. Vol. 774, p. 591-598
Keyword [en]
Higgs, LHC, charged Higgs
National Category
Subatomic Physics
Research subject
Physics with specialization in Elementary Particle Physics
Identifiers
URN: urn:nbn:se:uu:diva-323610DOI: 10.1016/j.physletb.2017.10.006ISI: 000414973200077OAI: oai:DiVA.org:uu-323610DiVA, id: diva2:1106858
Available from: 2017-06-08 Created: 2017-06-08 Last updated: 2018-03-09Bibliographically approved

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Publisher's full textarXiv:1706.01964

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Enberg, RikardKlemm, William

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