Measurement of the bottom quark production cross section using semileptonic decay electrons in pp¯ collisions at √s =1.8 TeV

We present measurements of the bottom-quark production cross sections in pp¯ collisions at √s =1.8 TeV. From the inclusive electron production rate, we have determined the bottom-quark production cross sections to be 1010±270, 168±43, 37±10 nb for the rapidity range of ‖${\mathit{y}}^{\mathit{b}}$‖<1.0 and the transverse momentum ranges of ${\mathit{p}}_{\mathit{T}}^{\mathit{b}}$>15, 23, 32 GeV/c, respectively. In addition, from the associated electron-${\mathit{D}}^0$ production rate, we have determined the bottom-quark cross section to be 364±80(stat)±95(syst) nb for ‖${\mathit{y}}^{\mathit{b}}$‖<1.0 and ${\mathit{p}}_{\mathit{T}}^{\mathit{b}}$>19 GeV/c.