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Automated one-loop calculations in four and D dimensions

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TLDR
In this article, two program packages for evaluating one-loop amplitudes are presented, which can work either in dimensional regularization or in constrained differential renormalization, and they are shown to be equivalent to regularization by dimensional reduction.
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This article is published in Computer Physics Communications.The article was published on 1999-05-01 and is currently open access. It has received 1564 citations till now. The article focuses on the topics: Dimensional regularization & Dimensional reduction.

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Top-philic Z' forces at the LHC

TL;DR: In this paper, the authors consider the low-energy effective theory of a top-philic Z′ and present possible UV completions, and examine carefully the treatment of ananomalous Z′ current in the low energy effective theory.
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NLO QCD corrections to ttbproduction at the LHC: 2. Full hadronic results

TL;DR: In this article, the one-loop amplitudes are computed using process-independent algebraic manipulations of Feynman diagrams and numerical tensor reduction, which provides very high numerical stability and CPU efficiency.
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Complete one-loop effects of SUSY QCD in $b\overline{b}h$ production at the LHC under current experimental constraints

TL;DR: In this paper, the SUSY QCD corrections were calculated in the parameter space of the Minimal Supersymmetric Standard Model (MSSM) with relatively heavy sparticles (1-3 TeV).
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Adaptive scanning—a proposal how to scan theoretical predictions over a multi-dimensional parameter space efficiently

TL;DR: A method is presented to exploit adaptive integration algorithms using importance sampling, like VEGAS, for the task of scanning theoretical predictions depending on a multi-dimensional parameter space.
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Vector Dark Matter through a Radiative Higgs Portal

TL;DR: In this paper, a model of spin-1 dark matter which interacts with the Standard Model predominantly via exchange of Higgs bosons was studied. And the authors proposed an alternative UV completion to the usual Vector Dark Matter Higgs Portal, in which vector-like fermions charged under SU (2) × U (1) − ε × ε ε Y and under the dark gauge group, U(1)′, generate an effective interaction between the Higgs and the dark matter at one loop.
References
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Journal ArticleDOI

Regularization and Renormalization of Gauge Fields

TL;DR: In this article, a new regularization and renormalization procedure for gauge theories is presented, which is particularly well suited for the treatment of gauge theories and is transparent when anomalies such as the Bell-Jackiw-Adler anomaly may occur.
Journal ArticleDOI

Feyn Calc - Computer-algebraic calculation of Feynman amplitudes

TL;DR: Feyn Calc as discussed by the authors is a computer program for automatic algebraic calculation of Feynman amplitudes, which can be used to calculate tree level diagrams as well as 1-and 2-loop corrections in the Standard Model.
Journal ArticleDOI

Supersymmetric Dimensional Regularization via Dimensional Reduction

TL;DR: In this article, a modified form of dimensional regularization is introduced which manifestly preserves gauge invariance, unitarity, and global supersymmetry, and also considers its application to supergravity.
Journal ArticleDOI

Techniques for the Calculation of Electroweak Radiative Corrections at the One-Loop Level and Results forW-physics at LEP 200

TL;DR: In this paper, a review of the techniques necessary for the calculation of virtual electroweak and soft photonic corrections at the one-loop level is presented. And the full set of analytical formulae and corresponding numerical results for the decay width of the W-boson and the top quark are presented.
Journal ArticleDOI

Automatic generation of tree level helicity amplitudes

TL;DR: The program MadGraph is presented which automatically generates postscript Feynman diagrams and Fortran code to calculate arbitrary tree level helicity amplitudes by calling HELAS[1] subroutines.
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