PARAMETERS ! assumed_value pos_excurs neg_excurs ! tb0 1.532 +0.009 -0.009 ! B0 lifetime !! -- FourS parameters fpp00 1.065 +0.026 -0.026 ! f++/f00 ratio B+B- to B0BOb at Upsilon FourS ! chi 0.092 +0.002 -0.002 ! chi=chi_d*fb0 ! chi_d=0.186+/-0.004, fb0 = 0.493 ! -- Lifetimes tb0 1.530 +0.009 -0.009 ! B0 lifetime tbplus 1.639 +0.010 -0.010 ! B+ lifetime