Department of Physics

Permanent URI for this collectionhttp://localhost:4000/handle/123456789/1932

Browse

Filters

2017 - 20202

Settings

Subject: search.filters.subject.Two Higgs doublet models

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Reconstructing a light pseudoscalar in the Type-X two Higgs doublet model
    (Elsevier, 2017-11) Mondal, Tanmoy
    We investigate the detectability as well as reconstructibility of a light pseudoscalar particle A, of mass in the 50–60 GeV range, which is still allowed in a Type-X (lepton-specific) two-Higgs doublet scenario. Such a pseudoscalar can be pair-produced in the decay of the 125 GeV scalar h. The light pseudoscalar in the aforementioned range, helpful in explaining the muon anomalous magnetic moment, has not only substantial branching ratio in the channel but also one of about in the final state. We show how to faithfully reconstruct the A mass using the mode, and establish the existence of a pseudoscalar around 50–60 GeV, using the process . This is the most reliable way of reconstructing the light A mass, with a statistical significance that amounts to discovery, with a few hundred (or less) of integrated luminosity.
  • No Thumbnail Available
    Item
    Searching for a light Higgs boson via the Yukawa process at lepton colliders
    (Elsevier, 2020-03) Mondal, Tanmoy
    We explore the prospect of Yukawa production of a light boson which can exist in an extended Higgs sector. A particularly interesting case is the light pseudoscalar in Type-X two Higgs doublet model which can explain the anomalous magnetic moment of muon at large . Considering ILC Higgs factory with GeV, we show that the available parameter space can be fully examined by the (tau) Yukawa process at 5σ. We also demonstrate the mass reconstruction of such a light particle which helps to sizably minimize the background events.