Search for dark matter in the framework of Einstein-Cartan gravity at the International Linear Collider (ILC)

TL;DR

This study explores the potential to detect dark matter fermions and a gauge boson at the ILC within Einstein-Cartan gravity, focusing on low-mass dark gauge bosons and setting limits on model parameters.

Contribution

It introduces a novel analysis of dark matter production in Einstein-Cartan gravity at a linear collider, using simulations to set bounds on torsion and gauge boson parameters.

Findings

Simulated di-muon plus missing energy events at ILC energies.

Set upper limits on torsion field and gauge boson masses.

Provided constraints for physics beyond the standard model.

Abstract

This paper investigates the possibility of Dark Matter (DM) fermions production alongside a gauge boson (A$^{\prime}$) using a model based on Einstein-Cartan gravity in an electron-positron linear collider, such as the ILC, that operates at a center-of-mass energy $\sqrt{s} = 500$ GeV with a detector's integrated luminosity of 500 fb$^{-1}$. We used the WHIZARD package as the event generator to simulate the $ e^{+} e^{-}$ interactions that lead to the production of di-muon pairs and missing transverse energy. We specifically are performing this study on a low mass dark gauge boson, M$_{A^\prime}$= 10 GeV, that can subsequently decay into a muon pair (A$^\prime\rightarrow \mu^{+}\mu^{-})$ while aiming to set upper limits on the free parameters' masses of the model, such as the torsion field (ST), if evidence for physics beyond the standard model is not found.