Heavy flavour physics: lifetimes
•First measurements which CDF will perform in b sector •Necessary step towards oscillation •Best measurement of Bs0, Lb.  (Unique)
•
HQET:
t(B+ )/ t (B0 )=1.05
 t( Bs0)/ t (B0 )=1.00
 t( Lb)/ t (B0 )=0.9 to 1.0 
Experiment:
t( Lb)/ t (B0 ) is 0.78+-.04
2 fb-1:
3000 Bs => s(ct(Bs)) ~ 0.03 ps
2000 LB => s(ct(LB)) ~ 0.04 ps
world average lifetime Bs to 62 MeV
worldaverage lifetime lambda b to 80 MeV