A High Luminosity e+e- Collider in the LHC tunnel to study the Higgs Boson

TL;DR

This paper proposes a high luminosity electron-positron collider in the LHC tunnel to study the Higgs boson, achieving significant event rates with a novel dual-machine design inspired by existing collider concepts.

Contribution

It introduces a new collider design combining a low emittance storage ring with an injector system, enabling high luminosity and efficient operation for Higgs boson studies.

Findings

Achieves luminosity of 10^34/cm2/s

Provides over 10^4 Higgs events per year per experiment

Proposes a dual-machine system for continuous beam top-up

Abstract

We consider the possibility of a 120x120 GeV e+e- ring collider in the LHC tunnel. A luminosity of 10^34/cm2/s can be obtained with a luminosity life time of a few minutes. A high operation efficiency would require two machines: a low emittance collider storage ring and a separate accelerator injecting electrons and positrons into the storage ring to top up the beams every few minutes. A design inspired from the high luminosity b-factory design and from the LHeC design report is presented. Statistics of over 10^4 HZ events per year per experiment can be contemplated for a Standard Higgs Boson mass of 115-130 GeV.