Speaker
Saiyad Ashanujjaman
(Karlsruhe Institute of Technology)
Description
The 125 GeV Higgs discovery completed the Standard Model, yet no new particles have appeared since. Still, multi-lepton anomalies at the LHC hint at another scalar around 150 GeV, decaying mainly to W bosons but not Z bosons—suggesting a neutral triplet. A reanalysis of ATLAS Run-2 diphoton data shows a 4σ excess near 152 GeV with a branching fraction near 0.7%. We find that this fits naturally within a simple Higgs-sector extension, namely the real Higgs triplet model. If confirmed, it would mark the first strong sign of new physics at the LHC.
Author
Saiyad Ashanujjaman
(Karlsruhe Institute of Technology)