Expectation for a measurement of the ttbar production cross section in the muon + jets final state using a multivariate technique

We demonstrate the feasibility of measuring the $t\overline t$ production cross section in $pp$ collisions at a center-of-mass energy of $\sqrt{s}=10\mathrm{\,Te\kern -0.1em V}$ with the CMS detector. This study is done using data accumulated during the first phase of the LHC running, equivalent to an integrated luminosity of $20\mbox{\,pb}^{-1}$. A multivariate analysis technique based on boosted decision trees which uses the kinematic and topological information of the event is employed to separate $t\overline t$ signal from background processes. Using Monte Carlo simulated events, we estimate the expected statistical and systematic uncertainties as $8.6\%$ and $21.7\%$ respectively. The integrated luminosity uncertainty of $10\%$ is not included in the systematic error estimate.