Anomalous dimuon charge asymmetry in proton-antiproton collisions

TL;DR

This paper reports a significant deviation from the Standard Model in the measured dimuon charge asymmetry, suggesting potential new physics in CP violation phenomena involving B mesons.

Contribution

The paper provides experimental measurements of dimuon charge asymmetry that challenge the Standard Model predictions, indicating possible new sources of CP violation.

Findings

Measured asymmetry differs from Standard Model by 3.6 sigma

Results suggest potential new physics beyond current models

Provides detailed overview of experimental methodology

Abstract

We present an overview of the measurements of the like-sign dimuon charge asymmetry by the DO Collaboration at the Fermilab Tevatron proton-antiproton Collider. The results differ from the Standard Model prediction of CP violation in mixing and interference of B^0 and B^0_s by 3.6 standard deviations.