QUARKS
 INSPIRE search

${\boldsymbol {\boldsymbol b}}$ $I(J^P)$ = $0(1/2^{+})$

  Charge = $−{1\over 3}$ $\mathit e$ Bottom = $−$1
${\mathit {\mathit b}}$-QUARK MASS   $4.18 {}^{+0.04}_{-0.03}$ GeV