Top quark pair production beyond NNLO
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13130_2015_Article_1871.pdf
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Author(s)
Muselli, Claudio
Bonvini, Marco
Forte, Stefano
Marzani, Simone
Ridolfi, Giovanni
Date Issued
August 2015
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
Muselli, Claudio et al. “Top Quark Pair Production beyond NNLO.” Journal of High Energy Physics 2015.8 (2015): n. pag.
Version
Final published version
Abstract
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[superscript 3]LO) in αs. 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[superscript 3]LO corrections increase the predicted top pair cross section at the LHC by about 4% over the NNLO.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
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Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP08(2015)076
