# Future Higgs Studies: A Theorist's Outlook

## TL;DR

This paper explores the theoretical implications of the Higgs boson discovery, emphasizing the importance of future studies at colliders to identify potential additional scalar particles beyond the Standard Model Higgs.

## Contribution

It surveys various extended scalar sector models that achieve an approximate alignment limit, crucial for understanding non-minimal Higgs theories.

## Key findings

- Alignment limit is key for non-minimal Higgs models
- Examples of scalar sectors with approximate alignment are surveyed
- Implications for future collider Higgs studies are discussed

## Abstract

We examine some of the theoretical and phenomenological implications of the Higgs boson discovery and discuss what these imply for future Higgs studies at the LHC and future colliders. In particular, one of the outstanding unanswered questions is whether additional scalars beyond the observed Higgs boson are present in the spectrum of fundamental particles. Any theory of a non-minimal Higgs sector must possess a scalar state whose properties are approximately those of the Standard Model Higgs boson. This can be achieved in the so-called alignment limit of the extended scalar sector. Examples of scalar sectors in which an approximate alignment limit is achieved are surveyed.