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Phenomenological signatures of additional scalar bosons at the LHC
Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa..
Harish Chandra Res Inst, Reg Ctr Accelerator Based Particle Phys, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India..
Univ Witwatersrand, Natl Inst Theoret Phys, Sch Phys, ZA-2050 Johannesburg, South Africa.;Univ Witwatersrand, Mandelstam Inst Theoret Phys, ZA-2050 Johannesburg, South Africa..
Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa..
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2016 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 76, no 10Article in journal (Refereed) Published
Abstract [en]

We investigate the search prospects for new scalars beyond the standard model at the large hadron collider (LHC). In these studies two real scalars S and x have been introduced in a two Higgs-doublet model (2HDM), where S is a portal to darkmatter (DM) through its interaction with., a DM candidate and a possible source of missing transverse energy (E-T(miss)). Previous studies focussed on a heavy scalar H decay mode H. h.., which was studied using an effective theory in order to explain a distortion in the Higgs boson (h) transverse momentum spectrum (von Buddenbrock et al. in arXiv:1506.00612[hep-ph], 2015). In this work, the effective decay is understood more deeply by including a mediator S, and the focus is changed to H -> hS, SS with S -> xx. Phenomenological signatures of all the new scalars in the proposed 2HDM are discussed in the energy regime of the LHC, and theirmass bounds have been set accordingly. Additionally, we have performed several analyses with final states including leptons and Emiss T, with H -> 4W, t (t) H -> 6W and A -> ZH channels, in order to understand the impact these scalars have on current searches.

Place, publisher, year, edition, pages
2016. Vol. 76, no 10
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:uu:diva-312103DOI: 10.1140/epjc/s10052-016-4435-8ISI: 000388983100002OAI: oai:DiVA.org:uu-312103DiVA, id: diva2:1064473
Available from: 2017-01-12 Created: 2017-01-04 Last updated: 2017-11-29Bibliographically approved

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