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Signatures of the Type-I 2HDM at the LHC
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. (Theoretical high energy physics)
School of Physics and Astronomy, University of Southampton, UK.
Korea Institute for Advanced Study, Seoul, Korea.
2018 (English)Conference paper, Published paper (Other academic)
Abstract [en]

One of the simplest extensions of the Standard Model (SM) is the two-Higgs-doublet model (2HDM), which contains two neutral Higgs bosons, in addition to a 125 GeV one, and a charged pair. At the Large Hadron Collider (LHC), gluon-induced processes are generally the most important modes for the resonant production of the SM-like Higgs boson as well as its pair-production, and it is generally considered to be the case also for an additional neutral Higgs boson possibly existing in nature. We show that for certain parameter configurations in the Type-I 2HDM, electroweak pair-production of the neutral Higgs states can dominate over the QCD-initiated production. Moreover, it is possible for the pair-production of the charged Higgs state along with a neutral one, which can only take place electroweakly, to have a substantial cross section. We delineate such 2HDM parameter space regions through its comprehensive numerical scanning, requiring their consistency with the most relevant theoretical and experimental constraints. We also highlight some specific di-Higgs signatures that can be probed at the LHC in order to establish the Type-I 2HDM as the underlying new physics model.

Place, publisher, year, edition, pages
2018.
National Category
Subatomic Physics
Research subject
Physics with specialization in Elementary Particle Physics
Identifiers
URN: urn:nbn:se:uu:diva-391449OAI: oai:DiVA.org:uu-391449DiVA, id: diva2:1345074
Conference
Corfu Summer Institute 2018 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2018), August 31-September 28, 2018, Corfu, Greece
Available from: 2019-08-22 Created: 2019-08-22 Last updated: 2019-10-10Bibliographically approved

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arXiv:1812.08623

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