Review of Bs mesons and b Baryons

TL;DR

This review summarizes recent experimental progress in B_s mesons and b baryons, highlighting new observations, decay modes, CP violation measurements, and searches for rare decays, reflecting significant advancements in understanding these particles.

Contribution

It provides a comprehensive overview of recent experimental discoveries and measurements related to B_s mesons and b baryons, including first observations and improved CP violation data.

Findings

First observation of the ground state b baryon Xi_b^0

New decay modes of B_s^0 and b baryons observed

Enhanced measurements of CP violation aligning with the standard model

Abstract

The measurements of B_s mesons and b baryons advanced greatly in the past year. The ground state b baryon Xi_b^0 was observed for the first time; numerous decay modes of the B_s^0 and b baryons were newly seen; measurements of CP violation in B_s^0 decays were improved, generally improving the agreement with the standard model; and the search for rare decays sensitive to new physics were pushed to new levels. It was a very productive year for measurements of b baryons and B_s^0 mesons.