Speaker
Juan Pablo Fernandez
(CIEMAT)
Description
We report new, world-leading measurements of b-hadron lifetimes and their ratios using B+->J/ψ K+ , B0->J/ψ K0*, B0->J/ψ K0s and Λb->J/ψ Λ, decays reconstructed in a data sample corresponding to 4.3 fb-1 collected by the CDF experiment. A detailed resolution model provides improved systematic uncertainties on the lifetimes, and determination of the b hadron decay-length using only the J/ψ decay-vertex, common to all modes, allow cancellation of the major systematic uncertainties in their ratios.
Primary author
The CDF Collaboration
(Fermilab)
