The Scientific Need for a Scalar/Higgs Factory

TL;DR

This paper argues for the scientific necessity of a muon collider dedicated to studying scalar particles like the Higgs, especially in scenarios with multiple Higgs bosons, complementing LHC capabilities.

Contribution

It presents the case for a muon collider as a crucial tool for probing the scalar sector, particularly when multiple Higgs particles are in the same mass range.

Findings

Muon collider can effectively probe scalar resonances in the electroweak sector.

Multiple Higgs bosons in the same mass range necessitate a specialized collider.

Complementarity between muon collider and LHC in scalar sector exploration.

Abstract

The scalar sector of the electroweak theory can be probed by a mu^+mu^- collider S channel resonance machine. We give arguments for when such a machine may be needed and when this information could be obtained by the LHC detector. A very interesting case is the possibility that several scalar particles are in the same mass range for the supersymmetric Higgs bosons h, H, and A, which would definitely require such a machine. The Higgs factory could follow the construction of a neutrino factory.