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Recent Progress in Perturbative Quantum Field Theory
Zvi Bern
In this talk, the recent breakthrough in two-loop perturbative calculations is reviewed, with emphasis on the applications to phenomenological studies. The recent precision measure…
Two-loop corrections to
Z. Bern, A. De Freitas, L. Dixon
An overview of the calculation of the two-loop helicity amplitudes for scattering of two gluons into two photons is presented. These matrix elements enter into the recent improved…
The Di-Photon Background to a Light Higgs Boson at the LHC
Zvi Bern, Lance Dixon, Carl Schmidt
Recent years have seen a significant advance in our ability to calculate two-loop matrix elements. In this talk we describe an application of this breakthrough to improve our under…
Perturbative Quantum Gravity and its Relation to Gauge Theory
Zvi Bern
In this review we describe a non-trivial relationship between perturbative gauge theory and gravity scattering amplitudes. At the semi-classical or tree level, the scattering ampli…
Isolating a light Higgs boson from the di-photon background at the LHC
Zvi Bern, Lance Dixon, Carl Schmidt
We compute the QCD corrections to the gluon fusion subprocess gg to gamma gamma, which forms an important component of the background to the search for a light Higgs boson at the L…
Supersymmetric Regularization, Two-Loop QCD Amplitudes and Coupling Shifts
Z. Bern, A. De Freitas, L. Dixon +1
We present a definition of the four-dimensional helicity (FDH) regularization scheme valid for two or more loops. This scheme was previously defined and utilized at one loop. It am…