Vector Resonances at Muon and Wakefield Colliders

TL;DR

Future high-energy lepton colliders, especially wakefield types, can effectively detect heavy vector resonances like Z' bosons by leveraging beamstrahlung-induced energy spread, which enhances resonance sensitivity across a broad energy spectrum.

Contribution

This paper demonstrates that beamstrahlung at wakefield colliders can be exploited to improve detection sensitivity for heavy vector resonances, offering a novel approach compared to traditional methods.

Findings

Beamstrahlung broadens the effective energy spectrum, aiding resonance detection.

Wakefield colliders show increased sensitivity to heavy Z' bosons.

Projections indicate significant discovery potential for kinetically mixed Z' scenarios.

Abstract

We explore the potential of future high-energy lepton colliders to probe heavy vector resonances. At wakefield colliders, intense beam-beam interactions produce radiation, called beamstrahlung, which redistributes luminosity from the nominal energy across a broad spectrum of lower collision energies. We show that this effect, conventionally viewed as a drawback, dramatically enhances sensitivity to resonances by effectively scanning a wide range of center-of-mass energies. We present projections for a benchmark scenario of a heavy kinetically mixed $Z'$.