Measurement of $ϕ_s$ at DØ Experiment

Abstract

Recent measurements of the DØ 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$σ$ deviation from the SM prediction, while the updated study of the $B_s \to J/ψϕ$ decay demonstrates a better agreement with the SM. All experimental results on the $CP$ violation in mixing are currently consistent with each other. The DØ collaboration has much more statistics to analyze, and all these results can be significantly improved in the future.

Proceedings of CKM2010, the 6th International Workshop on the CKM Unitarity Triangle, University of Warwick, UK, 6-10 September 2010