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Top Quark Pair Production beyond NNLO
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We construct an approximate expression for the total cross section for the production of a heavy quark-antiquark pair in hadronic collisions at next-to-next-to-next-to-leading order (N$^3$LO) in $\alpha_s$. We use a technique which exploits the analyticity of the Mellin space cross section, and the information on its singularity structure coming from large N (soft gluon, Sudakov) and small N (high energy, BFKL) all order resummations, previously introduced and used in the case of Higgs production. We validate our method by comparing to available exact results up to NNLO. We find that N$^3$LO corrections increase the predicted top pair cross section at the LHC by about 4% over the NNLO.
Forward citations
Cited by 3 Pith papers
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A Determination of the Top Mass from a Global PDF Analysis
The top-quark pole mass is determined to be 172.80 ± 0.26 GeV from a global NNPDF analysis at approximate N³LO QCD including NLO QED, EW, and toponium corrections.
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Leptonic CP asymmetry and heavy neutrino searches in seesaw scenario
Projects LHC and HL-LHC sensitivities to heavy neutrino mixing via dilepton channels in seesaw scenario, with dependence on R_ll and CP asymmetry.
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Non-standard decays of vector-like top partners in a $2$-Higgs doublet model at the HL-LHC
Collider analysis shows the 2τ + 2b + MET channel can probe vector-like top partners up to 1.9 TeV in 2HDM scenarios at HL-LHC.
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