4–8 Nov 2024
Uppsala University Main Building
Europe/Stockholm timezone

Indications for New Higgs Bosons in Associated Di-Photon Production

6 Nov 2024, 09:20
20m
Uppsala University Main Building

Uppsala University Main Building

Biskopsgatan 3 75310 Uppsala Sweden
BSM Higgs physics BSM Higgs physics 3 - sal IX

Speaker

Sumit Banik (University of Zurich & PSI)

Description

Statistically significant excesses exist at around $152$ GeV in associated di-photon production contained in the sidebands of SM Higgs analyses. They are most pronounced in the $\gamma \gamma + \tau$, $\gamma \gamma + \text{MET}$, $\gamma \gamma + \geq 1 \ell +\geq 1b$, $\gamma \gamma + 4 j$ signal regions, and can be explained by the Drell-Yan production of new Higgs bosons, i.e. $p p \to W \to H^\pm 𝐻$. In this context, we first examine the excesses in a simplified model approach, considering the decays of $H^\pm \to \tau \nu, t b, WZ$. We then specialize our analysis for the real Higgs triplet and two-Higgs doublet models, resulting in a combined significance of $\approx 4 \sigma$ and $\approx 4.3 \sigma$, respectively.

Primary track BSM Higgs physics
Is the speaker a PhD student or post-doc? Yes - My participation will be fully supported by my research group

Authors

Andreas Crivellin (University of Zurich (CH)) Bruce Mellado Garcia (University of Wisconsin) Guglielmo Coloretti (University of Zurich (UZH) / Paul Scherrer Institute (PSI)) Dr Saiyad Ashanujjaman (SGTB Khalsa College) Siddharth Prasad Maharathy (Institute of Physics) Sumit Banik (University of Zurich & PSI)

Presentation materials