Measurement of the $t\overline{t}$ production cross section in $p\overline{p}$ collisions at $\sqrt{s}=1.96\mathrm{TeV}$ using secondary vertex $b$ tagging

We report a new measurement of the $t\overline{t}$ production cross section in $p\overline{p}$ collisions at a center-of-mass energy of 1.96 TeV using events with one charged lepton (electron or muon), missing transverse energy, and jets. Using $425{\mathrm{pb}}^{-1}$ of data collected using the D0 detector at the Fermilab Tevatron Collider, and enhancing the $t\overline{t}$ content of the sample by tagging $b$ jets with a secondary vertex tagging algorithm, the $t\overline{t}$ production cross section is measured to be ${\sigma }_{p\overline{p}\to t\overline{t}+X}=6.6\pm 0.9(\mathrm{stat}+\mathrm{syst})\pm 0.4(\mathrm{lum})\mathrm{pb}$. This cross section is the most precise D0 measurement to date for $t\overline{t}$ production and is in good agreement with standard model expectations.