Implications of four-top and top-pair studies on triple-top production

Single Top and Top Pair Production

Differential Cross Sections for Top-pair and Single-top Production

NNLL Threshold Resummation for Top-pair and Single-top Production

I discuss threshold resummation at NNLL accuracy in the standard moment-space approach in perturbative QCD for top-pair and single-top production. For top quark pair production I present new approximate NNLO results for the total cross section and for the top quark transverse momentum and rapidity distributions at 8 TeV LHC energy. I discuss the accuracy of the soft-gluon approximation and show...

Higgs effects in top quark pair production †

Top quark production in pp̄ and e+e− collisions is enhanced by the exchange of a Higgs boson. The enhancement factors are calculated in the threshold region using the Greens function method. The complete postscript file of this preprint, including figures, is also available via anonymous ftp as /ttp95-25/ttp95-25.ps at ttpux2.physik.uni-karlsruhe.de (129.13.102.139), or via www at http://ttpux2....

Like Sign Top Pair Production at Lhc

Having a mass comparable to the weak scale, the top quark may have a sizable flavor changing couplings to Higgs bosons. We show that such couplings can be probed at the LHC through the parton subprocess c(¯ c)g → t(¯ t)A 0 , where the pseudoscalar A 0 subsequently decays into t¯ c or ¯ tc, giving rise to the intriguing final state of like sign top quark pairs. We also discuss major backgrounds ...