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The impact of additional scalar bosons at the LHC
Univ Witwatersrand, Natl Inst Theoret Phys, Johannesburg.
Univ Witwatersrand, South Africa..
Harish Chandra Res Inst, India..
Univ Witwatersrand, Natl Inst Theoret Phys, South Africa.; Univ Witwatersrand, South Africa..
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2017 (English)In: HIGH ENERGY PARTICLE PHYSICS WORKSHOP 2016, IOP PUBLISHING LTD , 2017, UNSP 012007Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

In this study we consider an effective model by introducing two hypothetical real scalars, H and chi - a dark matter candidate, where the masses of these scalars are 2m(h) < m(H) < 2m(t) and m(chi) approximate to m(h)/2 with m(h) and m(t) being the Standard Model Higgs boson and top quark masses, respectively. A distortion in the transverse momentum distributions of h in the intermediate region of the spectrum through the processes pp -> H -> h(chi chi) could be observed in this model. An additional scalar, S, has been postulated to explain large H -> h(chi chi) branching ratios, assuming m(h) less than or similar to m(s) less than or similar to mH - m(h) and m(s) > 2m(chi). Furthermore, a scenario of a two Higgs doublet model (2HDM) is introduced and a detailed proposal at the present energies of the Large Hadron Collider to study the extra CP-even (h, H), CP-odd (A) and charged (H-+/-) scalars has been pursued. With possible phenomenological implications, production and decay modes for these scalars are discussed. Based on the mass spectrum of H, A and H-+/-, the production of multi-leptons and Z+jets+missing-energy events are predicted. A specific, Type-II 2HDM model is discussed in detail.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2017. UNSP 012007
Series
Journal of Physics Conference Series, ISSN 1742-6588 ; 802
National Category
Subatomic Physics
Research subject
Physics with specialization in Elementary Particle Physics
Identifiers
URN: urn:nbn:se:uu:diva-328848DOI: 10.1088/1742-6596/802/1/012007ISI: 000400396400007OAI: oai:DiVA.org:uu-328848DiVA: diva2:1138226
Conference
High Energy Particle Physics Workshop, FEB 08-10, 2016, iThemba Labs N Facil, Johannesburg, SOUTH AFRICA
Funder
Carl Tryggers foundation , CTS-14:206Swedish Research Council, 621-2011-5107
Available from: 2017-09-04 Created: 2017-09-04 Last updated: 2017-09-04Bibliographically approved

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Mandal, Tanumoy

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