452 citations · 2.3k across the 23 of their papers we have counts for
22 papers · 1 filter
NLO vector boson production with light jets
Z. Bern, G. Diana, L. J. Dixon +8
In this contribution we present recent progress in the computation of next-to-leading order (NLO) QCD corrections for the production of an electroweak vector boson in association w…
Left-Handed W Bosons at the LHC
Z. Bern, G. Diana, L. J. Dixon +8
The production of W bosons in association with jets is an important background to new physics at the LHC. Events in which the W carries large transverse momentum and decays leptoni…
Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
C. F. Berger, Z. Bern, L. J. Dixon +6
We present the first next-to-leading order QCD results for W + 4-jet production at hadron colliders. Total cross sections, as well as distributions in the jet transverse momenta an…
Vector Boson + Jets with BlackHat and Sherpa
C. F. Berger, Z. Bern, L. J. Dixon +6
We review recent NLO QCD results for W,Z + 3-jet production at hadron colliders, computed using BlackHat and SHERPA. We also include some new results for Z + 3-jet production at th…
Next-to-Leading Order QCD Predictions for Z,gamma^*+3-Jet Distributions at the Tevatron
C. F. Berger, Z. Bern, L. J. Dixon +6
Using BlackHat in conjunction with SHERPA, we have computed next-to-leading order QCD predictions for a variety of distributions in Z,gamma*+1,2,3-jet production at the Tevatron, w…
Multi-Parton Scattering Amplitudes via On-Shell Methods
Carola F. Berger, Darren Forde
We present an overview of recent developments, based on on-shell techniques, in the calculation of multi-parton scattering amplitudes at one loop that are relevant for phenomenolog…
NLO QCD Predictions for W+3 jets
C. F. Berger, Z. Bern, L. J. Dixon +6
In this contribution we present results from the NLO computation of the production of a boson in association with three jets in hadronic collisions. The results are obtained by…
Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders
C. F. Berger, Z. Bern, L. J. Dixon +6
We present next-to-leading order QCD predictions for a variety of distributions in W+3-jet production at both the Tevatron and the Large Hadron Collider. We include all subprocesse…
Multi-jet cross sections at NLO with BlackHat and Sherpa
C. F. Berger, Z. Bern, L. J. Dixon +6
In this talk, we report on a recent next-to-leading order QCD calculation of the production of a W boson in association with three jets at hadron colliders. The computation is perf…
Precise Predictions for W + 3 Jet Production at Hadron Colliders
C. F. Berger, Z. Bern, L. J. Dixon +6
We report on the first next-to-leading order QCD computation of W + 3-jet production in hadronic collisions including all partonic subprocesses. We compare the results with CDF dat…
One-Loop Multi-Parton Amplitudes with a Vector Boson for the LHC
C. F. Berger, Z. Bern, L. J. Dixon +5
In this talk, we present the first, numerically stable, results for the one-loop amplitudes needed for computing W,Z + 3 jet cross sections at the LHC to next-to-leading order in t…
One-Loop Calculations with BlackHat
C. F. Berger, Z. Bern, L. J. Dixon +5
We describe BlackHat, an automated C++ program for calculating one-loop amplitudes, and the techniques used in its construction. These include the unitarity method and on-shell rec…
An Automated Implementation of On-Shell Methods for One-Loop Amplitudes
C. F. Berger, Z. Bern, L. J. Dixon +5
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 cons…
Constructing QCD one-loop amplitudes
Darren Forde
In the context of constructing one-loop amplitudes using a unitarity bootstrap approach we discuss a general systematic procedure for obtaining the coefficients of the scalar bubbl…
Direct extraction of one-loop integral coefficients
Darren Forde
We present a general procedure for obtaining the coefficients of the scalar bubble and triangle integral functions of one-loop amplitudes. Coefficients are extracted by considering…
On-Shell Unitarity Bootstrap for QCD Amplitudes
Carola F. Berger, Zvi Bern, Lance J. Dixon +2
We describe the recently developed on-shell bootstrap for computing one-loop amplitudes in non-supersymmetric theories such as QCD. The method combines the unitarity method with lo…
On-shell Recursion Relations for n-point QCD
Darren Forde
We present on the use of on-shell recursion relations. These can be used not only for calculating tree amplitudes, including those with masses, but also to compute analytically the…
All One-loop Maximally Helicity Violating Gluonic Amplitudes in QCD
Carola F. Berger, Zvi Bern, Lance J. Dixon +2
We use on-shell recursion relations to compute analytically the one-loop corrections to maximally-helicity-violating n-gluon amplitudes in QCD. The cut-containing parts have been c…
Bootstrapping One-Loop QCD Amplitudes with General Helicities
Carola F. Berger, Zvi Bern, Lance J. Dixon +2
The recently developed on-shell bootstrap for computing one-loop amplitudes in non-supersymmetric theories such as QCD combines the unitarity method with loop-level on-shell recurs…
All-Multiplicity One-Loop Corrections to MHV Amplitudes in QCD
Darren Forde, David A. Kosower
We compute the complete one-loop corrections to the simplest class of QCD gluon amplitudes, those with two color-adjacent opposite-helicity external particles. We present results f…
Twistor-Inspired Construction of Electroweak Vector Boson Currents
Zvi Bern, Darren Forde, David A. Kosower +1
We present an extension of the twistor-motivated MHV vertices and accompanying rules presented by Cachazo, Svrvcek and Witten to the construction of vector-boson currents coupling…
Infrared-Finite Amplitudes for Massless Gauge Theories
D. A. Forde, A. Signer
We present a method to construct infrared-finite amplitudes for gauge theories with massless fermions. Rather than computing -matrix elements between usual states of the Fock sp…