Probing vector-like top partner from same-sign dilepton events at the LHC

Hang Zhou,Ning Liu

Table 1. Cutflow of cross sections for the signal process ${pp}\to {\mu }^{\pm }{\mu }^{\pm }+2b+4j$ and the SM background processes ${pp}\to t\bar{t},t\bar{t}{W}^{\pm },{WW}$+jets at the 14 TeV LHC. The cross sections are in the unit of pb. The benchmark point is the same as in figure 3.

$t\bar{t}$ $t\bar{t}\,{W}^{\pm }$ WW+jets signal Cut 1: same-sign dimuon 8.24 2.00 × 10−2 1.77 × 10−3 0.590 Cut 2: at least 6 jets 0.832 3.55 × 10−3 1.10 × 10−4 0.268 Cut 3: ${{/}\!\!\!\!{E}}_{T}\gt 180\,\mathrm{GeV}$ 3.88 × 10−2 3.19 × 10−4 2.24 × 10−5 0.116 Cut 4: on relative distance 9.00 × 10−3 6.31 × 10−5 1.74 × 10−6 9.22 × 10−2 Cut 5: at least 1 b-jet(pT > 280 GeV) 4.91 × 10−4 7.24 × 10−6 0 4.87 × 10−2 Cut 6: mb2μ2j > 800 GeV 0 4.13 × 10−6 0 3.95 × 10−2