538 citations · 3.6k across the 37 of their papers we have counts for
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Feynman Integrals from Positivity Constraints
Mao Zeng
We explore inequality constraints as a new tool for numerically evaluating Feynman integrals. A convergent Feynman integral is non-negative if the integrand is non-negative in eith…
Locally finite two-loop amplitudes for off-shell multi-photon production in electron-positron annihilation
Charalampos Anastasiou, Rayan Haindl, George Sterman +2
We study the singularity structure of two-loop QED amplitudes for the production of multiple off-shell photons in massless electron-positron annihilation and develop counterterms t…
Two-Loop Integrals for Planar Five-Point One-Mass Processes
S. Abreu, H. Ita, F. Moriello +3
We present the computation of a full set of planar five-point two-loop master integrals with one external mass. These integrals are an important ingredient for two-loop scattering…
Five-Point Two-Loop Amplitudes from Numerical Unitarity
Samuel Abreu, Fernando Febres Cordero, Harald Ita +2
We present advances in the development of the numerical unitarity method for the computation of multi-loop amplitudes in QCD. As an application, we show results for all the leading…
Planar Two-Loop Five-Gluon Amplitudes from Numerical Unitarity
Samuel Abreu, Fernando Febres Cordero, Harald Ita +2
We present a calculation of the planar two-loop five-gluon amplitudes. The amplitudes are obtained in a variant of the generalized unitarity approach suitable for numerical computa…
Two-Loop Four-Gluon Amplitudes with the Numerical Unitarity Method
S. Abreu, F. Febres Cordero, H. Ita +3
We present the first numerical computation of two-loop amplitudes based on the unitarity method. As a proof of principle, we compute the four-gluon process. We discuss the new meth…
Resummation of Jet Veto Logarithms at partial NLL + NNLO for Production at the LHC
S. Dawson, P. Jaiswal, Ye Li +2
We compute the resummed on-shell production cross section under a jet-veto at the LHC to partial NLL order matched to the fixed order NNLO result. Differential NNLO c…
Drell-Yan process with jet vetoes: breaking of generalized factorization
Mao Zeng
Resummation of hadron collision cross sections, when the measurement imposes a hierarchy of scales, relies on factorization. Cancellation of Glauber / Coulomb gluons is a necessary…
Effective Field Theory for Higgs Plus Jet Production
S. Dawson, I. M. Lewis, Mao Zeng
We use an effective field theory (EFT) which includes all possible gluon-Higgs dimension-5 and dimension-7 operators to study Higgs boson plus jet production in next-to-leading ord…
Transverse momentum resummation effects in W^+W^- measurements
Patrick Meade, Harikrishnan Ramani, Mao Zeng
The W^+W^- cross section has remained one of the most consistently discrepant channels compared to SM predictions at the LHC, measured by both ATLAS and CMS at 7 and 8 TeV. Develop…
Quantifying Comparisons of Threshold Resummations
George Sterman, Mao Zeng
We explore similarities and differences between widely-used threshold resummation formalisms, employing electroweak boson production as an instructive example. Resummations based o…
Threshold Resummed and Approximate NNLO results for W+W- Pair Production at the LHC
S. Dawson, Ian M. Lewis, Mao Zeng
The next-to-leading order (NLO) QCD radiative corrections to W+W- production at hadron colliders are well understood. We combine NLO perturbative QCD calculations with soft-gluon r…