Electroweak Precision Physics from Low to High Energies

TL;DR

This paper reviews how electroweak precision observables constrain the Standard Model and new physics models like the MSSM, providing insights into parameters such as the Higgs mass and supersymmetry scales.

Contribution

It synthesizes constraints from various precision measurements to inform the parameter space of the Standard Model and supersymmetric theories.

Findings

EWPO constrain the Higgs boson mass and new physics parameters.

Combined data narrows down the viable supersymmetry mass scales.

Electroweak and astrophysical data together refine model predictions.

Abstract

Electroweak precision observables (EWPO) can give valuable information about the last unknown paramter of the Standard Model (SM), the Higgs-boson mass M_H^SM. EWPO can also restrict the parameter space of new physics models (NPM) such as the Minimal Supersymmetric Standard Model (MSSM). We review the respective constraints from the W boson mass, the effective leptonic mixing angle, the anomalous magnetic moment of the muon and electric dipole moments. Within the MSSM also the lightest Higgs-boson mass, M_h, is discussed as a precision observable. The EWPO, supplemented with B physics observables and astrophysical data can be used to determine indirectly the preferred mass scales of Supersymmetry and M_h.