Search for CP violation in Bs0μ+DsXB_s^0 \to \mu^+ D_s^- X decays in ppˉp\bar{p} collisions at s=1.96\sqrt{s}=1.96 TeV

Collaboration
Apr, 2009

Citations per year

20092011201320152017051015202530
Abstract: (arXiv)
We have performed a search for CP violation in a sample of Bs -> Ds mu X decays corresponding to 55~fb1^{-1} of proton-antiproton collisions collected by the D0 detector in Run~II at the Fermilab Tevatron Collider. New physics in Bs0B_s^0 mixing could contribute a significant CP violating weak phase, which would be observed as a difference in the decay-time distribution for Bs0Bˉs0B_s^0\to \bar{B}_s^0 oscillated states versus that for Bˉs0Bs0\bar{B}_s^0\to {B}_s^0. A fit to the decay-time distributions of the Bs0/Bˉs0B_s^0/\bar{B}_s^0 candidates yields the flavor-specific asymmetry afss=[1.7±9.1(stat)1.5+1.4(syst)]×103a_{fs}^{s}=[-1.7\pm 9.1\mathrm{(stat)}^{+1.4}_{-1.5}\mathrm{(syst)}] \times 10^{-3}, which excludes CP violation due to new physics within the experimental sensitivity.
Note:
  • published in Phys. Rev. D
  • 13.20.He
  • 11.30.Er
  • 14.40.Nd
  • OSG : D0
  • anti-p p: interaction
  • CP: violation
  • B/s: semileptonic decay
  • Batavia TEVATRON Coll
  • flavor: asymmetry: time dependence
  • mass spectrum: (K+ K- pi-)