ILC Workshop on Potential Experiments (ILCX2021)

Influence of dark matter spin on detection possibility at future $e^+e^-$ colliders

28 Oct 2021, 20:40

20m

Room #4 (Zoom Meeting ID: 840 3553 0145)

Oral presentation using Zoom Session H: BSM particle production H-3: BSM particle production

Speaker

Michał Iglicki (University of Warsaw)

Description

It is commonly believed that Dark Matter (DM) should exist in the form of new, Beyond-the-Standard-Model stable particles.

Despite continued efforts, such particles have not yet been detected, which means that interactions between DM and SM must be very weak. Dark particles, even if they are already produced at existing colliders, evade detection due to tiny signal-to-background ratio.

However, future $e^+e^−$ colliders (e.g. ILC), provide large luminosity and collision energy as well as very clean collision environment (which means low background). They may potentially lead to a breakthrough in the search for dark particles.

In this talk, I will estimate the maximal possible cross section for DM production, calculated within simple (but QFT-consistent) models of Higgs-mediated dark matter of different spins. The estimations will be based on current theoretical constraints and experimental limits on DM-SM interaction strength. For each considered value of DM spin, I will present allowed parameter space and compare the expected signal to the background, determining whether dark particles could be discovered at high confidence level.

Presentation materials

iglicki_ilcx2021.pdf