A Short Overview on Low Mass Scalars at Future Lepton Colliders

Abstract

In this manuscript, I give a short summary on scenarios with new physics scalars that could be investigated at future e+e− colliders. I concentrate on cases where at least one of the additional scalars 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 several overview talks I recently gave at the CEPC workshop, FCC week and ECFA future collider workshop, as well as a Snowmass White Paper.

TRSM Benchmark Planes -- Snowmass White Paper

“…A short review about the current state of the art for such searches and models which allow for low scalars can e.g. be found in [32]. In this model, the only feasible production is Zh radiation of the lighter scalar, with production cross sections given in figure 6.…”

“…Shown is also the contribution of Z h to ν ν h using a factorized approach for the Z decay. Taken from [32].…”

A short overview on low mass scalars at future lepton colliders

“…This should be viewed as an encouragement for further detailed studies in this direction. A preliminary version of this overview has been submitted as a Snowmass White Paper [5].…”

An overview on low mass scalars at future lepton colliders

“…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].…”

“…m h [GeV] Cross section for light SM-like scalar at e+e-, sqrts=250 GeV Zh ν ν h ν ν h via Zh Figure 1: 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 presented in [2], extended to higher mass range.…”