Measurement of $\phi_s$ at D{\O} Experiment

TL;DR

This paper reviews recent DØ experiment measurements related to CP violation, highlighting a significant deviation in dimuon asymmetry and improved agreement in B_s decay, with prospects for future enhancements.

Contribution

It provides an updated overview of DØ measurements on CP violation, including a notable deviation in dimuon asymmetry and refined B_s decay analysis, contributing to the understanding of potential new physics.

Findings

3.2σ deviation in dimuon charge asymmetry

Better agreement with SM in B_s → J/ψ φ decay

Future data will improve measurement precision

Abstract

Recent measurements of the D\O\ experiment related to the search for new phenomena beyond the Standard Model are reviewed. The new measurement of the like-sign dimuon charge asymmetry reveals a 3.2$\sigma$ deviation from the SM prediction, while the updated study of the $B_s \to J/\psi \phi$ decay demonstrates a better agreement with the SM. All experimental results on the $CP$ violation in mixing are currently consistent with each other. The D\O\ collaboration has much more statistics to analyze, and all these results can be significantly improved in the future.