Precision Constraints on Extra Fermion Generations
Jens Erler, Paul Langacker
TL;DR
This paper reviews the motivation for extra fermion generations and analyzes how recent electroweak precision data constrains their existence, highlighting the impact of updated experimental interpretations.
Contribution
It provides a comprehensive analysis of electroweak constraints on additional fermion generations considering recent experimental updates.
Findings
Electroweak data places significant constraints on extra fermion generations.
Updated low energy experiment interpretations influence the viability of additional families.
The paper clarifies the theoretical motivations for considering extra fermion generations.
Abstract
There has been renewed interest in the possibility of additional fermion generations. At the same time there have been significant changes in the relevant electroweak precision constraints, in particular, in the interpretation of several of the low energy experiments. We summarize the various motivations for extra families and analyze them in view of the latest electroweak precision data.
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