# CP Symmetries as Guiding Posts: Revamping Tri-Bi-Maximal Mixing-I

## TL;DR

This paper explores how generalized CP symmetries can modify the Tri-Bi-Maximal neutrino mixing pattern, leading to new variants with potential phenomenological relevance.

## Contribution

It systematically constructs new TBM variants based on generalized CP symmetries, expanding the landscape of neutrino mixing models.

## Key findings

- New TBM variants related to original by CP symmetries
- Identification of a recently discussed mixing matrix as a CP-symmetry-based variant
- Discussion of phenomenological implications of these new mixing patterns

## Abstract

We analyze the possible generalized CP symmetries admitted by the Tri-Bi-Maximal (TBM) neutrino mixing. Taking advantage of these symmetries we construct in a systematic way other variants of the standard TBM ansatz. Depending on the type and number of generalized CP symmetries imposed, we get new mixing matrices, all of which related to the original TBM matrix. One of such "revamped" TBM variants is the recently discussed mixing matrix of arXiv:1806.03367. We also briefly discuss the phenomenological implications following from these mixing patterns.