Speaker
Description
In recent years, multi-lepton anomalies have been accumulated by analyzing Large Hadron Collider (LHC) data, pointing towards the existence of beyond the Standard Model (SM) bosons. The data is consistent with a scalar particle $S$ within a mass range between 130 GeV and 160 GeV. A simplified model, the Two-Higgs Doublet plus an additional Scalar (2HDM$+S$) is used to predict the decay of a singlet scalar $S\rightarrow \gamma\gamma$, $Z\gamma$, $ZZ$ and $WW$ and in a recent paper (arxiv:2109.02650), a singlet scalar at 150 GeV was identified, which indicates a scalar resonance $S$ which decays into photons, and, to a lesser extent to $Z\gamma$, in association with missing energy, jets, or lepton. However, we do not see the $S\rightarrow ZZ$ signal. Therefore, to allow the scalar to decay into the channel $WW$ and not the $ZZ$, we look at the Higgs Triplet model where a neutral scalar $H^{0}$ can only decay into $WW$. This study investigates these multi-lepton anomalies by considering the Higgs Triplet Model with a hyper-charge of zero (HTM0). It consists of a neutral scalar $H^{0}$ that stems from the CP-even component of the Higgs triplet and the two charged scalars $h^{\pm}$ which stem from the charged component of the Higgs triplet. These components come from the mixing between the nonphysical fields of the Higgs doublet and the Higgs triplet.
Level for award;(Hons, MSc, PhD, N/A)?
MSc
| Apply to be considered for a student ; award (Yes / No)? | Yes |
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