Higgs Physics as a Window Beyond the MSSM (BMSSM)

TL;DR

This paper explores how new physics beyond the MSSM, introduced via effective operators, can modify Higgs and superpartner spectra, providing a constrained framework to interpret experimental limits.

Contribution

It introduces a minimal effective field theory approach with two operators to describe BMSSM physics, linking experimental Higgs limits to potential new degrees of freedom.

Findings

Higgs mass constraints imply additional interactions beyond MSSM.

Modified Higgs, chargino, and neutralino spectra and couplings.

A highly constrained effective field theory description of BMSSM.

Abstract

We interpret the current experimental limit on the lightest Higgs boson mass to suggest that if nature is supersymmetric, there are additional interactions beyond those of the MSSM coming from new degrees of freedom around the TeV scale. Within an effective field theory analysis, the leading order corrections to the MSSM are described in terms of only two operators. This provides a highly constrained description of Beyond MSSM (BMSSM) physics. The scalar Higgs spectrum as well as the chargino and neutralino spectrum and couplings are modified in a distinctive way. These operators can be generated by a variety of microscopic mechanisms.