PARAMETERS ! assumed_value pos_excurs neg_excurs ! tb0 1.532 +0.009 -0.009 ! B0 lifetime !! -- FourS parameters fpp00 1.029 +0.035 -0.035 ! 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