{First Flavor-Tagged Determination of Bounds on Mixing- Induced CP Violation in Bs -> J/psi phi Decays}

Journal Article (Academic article)

This Letter describes the first determination of bounds on the CP-violation parameter 2betas using Bs0 decays in which the flavor of the bottom meson at production is identified. The result is based on approximately 2000 Bs0-->J/psiphi decays reconstructed in a 1.35 fb-1 data sample collected with the CDF II detector using $p\bar{p}$ collisions produced at the Fermilab Tevatron. We report confidence regions in the two-dimensional space of 2betas and the decay-width difference DeltaGamma. Assuming the standard model predictions of 2betas and DeltaGamma, the probability of a deviation as large as the level of the observed data is 15%, corresponding to 1.5 Gaussian standard deviations.

Duke Authors

Cited Authors

  • Aaltonen, ; T, ; others,

Published Date

  • 2008

Published In

  • Phys. Rev. Lett.

Volume / Issue

  • 100 /

Start / End Page

  • 161802 -

PubMed ID

  • 18518184