# The BlackHat Library for One-Loop Amplitudes

@article{Bern2014TheBL, title={The BlackHat Library for One-Loop Amplitudes}, author={Z. Bern and L. Dixon and F. Cordero and S. Hoeche and H. Ita and D. Kosower and D. Ma{\^i}tre and K. Ozeren}, journal={arXiv: High Energy Physics - Phenomenology}, year={2014}, volume={523}, pages={012051} }

We present recent next-to-leading order (NLO) results in perturbative QCD obtained using the BLACKHAT software library. We discuss the use of n-tuples to separate the lengthy matrix-element computations from the analysis process. The use of n-tuples allows many analyses to be carried out on the same phase-space samples, and also allows experimenters to conduct their own analyses using the original NLO computation.

#### 14 Citations

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#### References

SHOWING 1-10 OF 96 REFERENCES

Automation of one-loop QCD computations

- Physics
- 2011

We present the complete automation of the computation of one-loop QCD corrections, including UV renormalization, to an arbitrary scattering process in the Standard Model. This is achieved by… Expand

Full one-loop amplitudes from tree amplitudes

- Physics
- 2008

We establish an efficient polynomial-complexity algorithm for one-loop calculations, based on generalized D-dimensional unitarity. It allows automated computations of both cut-constructible and… Expand

ONE-LOOP AMPLITUDES FOR E+E- TO FOUR PARTONS

- Physics
- 1998

Abstract We present the first explicit formulae for the complete set of one-loop helicity amplitudes necessary for computing next-to-leading order corrections for e + e − annihilation into four jets,… Expand

Automated one-loop calculations with GoSam

- Physics
- 2012

We present the program package GoSam which is designed for the automated calculation of one-loop amplitudes for multi-particle processes in renormalisable quantum field theories. The amplitudes,… Expand

Next-to-leading order QCD calculations with parton showers II: soft singularities

- Physics
- 2004

Programs that calculate observables in quantum chromodynamics at next-to-leading order typically generate events that consist of partons rather than hadrons -- and just a few partons at that. These… Expand

Matching NLO QCD computations with Parton Shower simulations: the POWHEG method

- Physics
- 2007

The aim of this work is to describe in detail the POWHEG method, first suggested by one of the authors, for interfacing parton-shower generators with NLO QCD computations. We describe the method in… Expand

An Automated Implementation of On-shell Methods for One-Loop Amplitudes

- Physics
- 2008

We present the first results from BlackHat, an automated C++ program for calculating one-loop amplitudes. The program implements the unitarity method and on-shell recursion to construct amplitudes.… Expand

Next-to-Leading Order W 5-Jet Production at the LHC

- Physics
- 2013

We present next-to-leading order QCD predictions for the total cross section and for a comprehensive set of transverse-momentum distributions in W + 5-jet production at the Large Hadron Collider. We… Expand

Precise predictions for W+4-jet production at the large hadron collider.

- Physics, Medicine
- Physical review letters
- 2011

This is the first hadron-collider process with five final-state objects to be computed at NLO, and total cross sections, as well as distributions in the jet transverse momenta, are provided for the initial LHC energy. Expand

Three-jet cross sections in hadron-hadron collisions at next-to-leading order.

- Physics, Medicine
- Physical review letters
- 2002

It is shown that the next-to-leading order correction significantly reduces the renormalization and factorization scale dependence of the three-jet cross section. Expand