Probing new electroweak states via precision measurements at the LHC and future colliders

TL;DR

This paper evaluates how future collider experiments can indirectly detect new electroweak states, which are difficult to find directly, by analyzing precision measurements of Drell-Yan processes at the LHC and beyond.

Contribution

It provides a comparative analysis of the sensitivity of the high-luminosity LHC and future colliders to new electroweak multiplets through precision measurements.

Findings

High-luminosity LHC can significantly constrain electroweak multiplets.

Future colliders offer improved sensitivity over current LHC capabilities.

Electroweak precision tests are effective for probing otherwise elusive new physics.

Abstract

Several new physics scenarios, motivated e.g. by dark matter, feature new electroweakly charged states where the lightest particle in the multiplet is stable and neutral. In such cases direct searches at LHC are notoriously difficult, while electroweak precision tests both at hadron and lepton colliders offer the possibility to indirectly probe those states. In this work, we assess the sensitivity of the high-luminosity phase of the LHC on new electroweak multiplets via the modification of neutral and charged Drell-Yan processes, and compare the reach of future hadron and lepton colliders presently under consideration.