*
* Lifetimes are taken from the B lifetimes WG,
* ratios (except B+/B0) are calculated assuming uncorrelated errors,
* all preliminary measurements included
* 
* New lifetimes from Lucia Di Ciaccio based on Moriond 2000 fractions
* (1st iteration for summer 2000 results, June 26, 2000)
* Updated lifetimes from Lucia Di Ciaccio based on fractions of June 29, 2000
* (2nd iteration for summer 2000 results, June 29, 2000)
* Updated lifetimes from Lucia Di Ciaccio based on fractions of April 23, 2001
* (1st iteration for final summer 2000 preprint, May 2, 2001)
*
*
***********************************
*
* Provided by the lifetime WG: 02-05-2001 hh:mm
*
* Name          Value, err+, err-      ! Description              
* ============  =====================    =========================
*
  taub          1.564  +0.014  -0.014  ! average B lifetime

  taubu         1.647  +0.021  -0.021  ! B+ lifetime
  taubd         1.546  +0.021  -0.021  ! B0 lifetime
  taubs         1.464  +0.057  -0.057  ! Bs lifetime
  taulamb       1.208  +0.051  -0.051  ! b-baryon lifetime (not Lambda_b)

  taulamb_only  1.229  +0.080  -0.080  ! Lambda_b lifetime
  tauxib        1.390  +0.340  -0.280  ! average Xi_b lifetime

  taubu/taubd   1.063  +0.020  -0.020  ! B+/B0 lifetime ratio (direct meas)

  taubd/taub    0.988  +0.016  -0.016  ! B0/<B> lifetime ratio
  taubu/taub    1.053  +0.016  -0.016  ! B+/<B> lifetime ratio
  taubs/taub    0.936  +0.037  -0.037  ! Bs/<B> lifetime ratio
  taulamb/taub  0.772  +0.033  -0.033  ! b-baryon/<B> lifetime ratio
  taubs/taubd   0.947  +0.039  -0.039  ! Bs/B0 lifetime ratio
  taulamb/taubd 0.781  +0.035  -0.035  ! b-baryon/B0 lifetime ratio