An overview on low mass scalars at future lepton colliders

Abstract

Although many suggestions for BSM searches at future colliders exist, most of them concentrate on additional scalars that have masses higher than the current SM scalar mass. I will give a short overview on the current status of models and searches for scalars with masses below this. This work is mainly based on [1,2].

TRSM benchmark planes - EPS-HEP2023 update

“…TRSM benchmark planes Tania Robens Cross section for light SM-like scalar at e+e-, sqrts=250 GeV Zh ν ν h ν ν h via Zh Figure 5: Leading-order production cross sections for Z h and h ν ν production at an e + e − collider with a com energy of 250 GeV using Madgraph5 for an SM-like scalar h. Shown is also the contribution of Z h to ν ν h using a factorized approach for the Z decay. Update of plot in [22], first presented in [23]. Right: available parameter space in the m h 1 , m h 2 plane, with color coding denoting the rescaling parameter sin α for the lighter scalar h 1 .…”

A Short Overview on Low Mass Scalars at Future Lepton Colliders

“…The corresponding results are shown Leading-order production cross sections for Z h and h ν ℓ νℓ production at an e + e − collider with a com energy of 250 GeV using Madgraph5 for an SM-like scalar h. Shown is also the contribution of Z h to ν ℓ νℓ h using a factorized approach for the Z decay. Update of plot in [1], first presented in [2]. FIG.…”

“…In this short proceeding, I summarize the current status of such searches and present new physics scenarios that still allow for such states, taking all current constraints into account. The work presented here is based on [1], and some of the results have additionally been presented in [2].…”

“…I concentrate on cases where at least one of the additional scalar has a mass below 125 GeV, and discuss both models where this could be realized, as well as studies which focus on such scenarios. This work is based on [1], and partial results were also presented in [2].…”