Constraints of mixing matrix elements in the sequential fourthgeneration model

TL;DR

This paper reviews constraints on the elements of the 4x4 quark mixing matrix in the sequential fourth generation model, focusing on rare meson decays and the matrix hierarchy to explore the existence of a fourth generation.

Contribution

It provides a detailed analysis of the constraints on the 4x4 quark mixing matrix elements using rare meson decay data, highlighting the hierarchy and potential existence of a fourth generation.

Findings

Constraints on matrix elements from rare decays

Hierarchy patterns in the 4x4 mixing matrix

Implications for the existence of a fourth generation

Abstract

We review our works on the sequential fourth generation model and focus on the constriants of $4\times 4$ quark mixing matrix elements. We investigate the quark mixing matrix elements from the rare $K,B$ meson decays. We talk about the $ hierarchy$ of the $4\times 4$ matrix and the existence of fourth generation.