Results 41 to 50 of about 2,054,858 (263)
Tensor decomposition for bosonic and fermionic scattering amplitudes [PDF]
Physical Review D, 2020 In this paper, we elaborate on a method to decompose multiloop multileg scattering amplitudes into Lorentz-invariant form factors, which exploits the simplifications that arise from considering four-dimensional external states.
T. Peraro, L. Tancredi
semanticscholar +1 more source
Using neural networks for efficient evaluation of high multiplicity scattering amplitudes [PDF]
Journal of High Energy Physics, 2020 Precision theoretical predictions for high multiplicity scattering rely on the evaluation of increasingly complicated scattering amplitudes which come with an extremely high CPU cost. For state-of-the-art processes this can cause technical bottlenecks in
S. Badger, Joseph Aylett-Bullock
semanticscholar +1 more source
Faddeev-type equations for three-body symmetry violating scattering amplitudes [PDF]
Phys.Rev.C82:028502,2010, 2010 The equations which relate three-body and two-body symmetry violating scattering amplitudes are derived in the first order of symmetry violating interactions. They can be used to obtain three-body symmetry violating scattering amplitudes from two-body symmetry violating scattering amplitudes calculated in low energy effective field theory.
arxiv +1 more source
Scattering Amplitudes and the Conservative Hamiltonian for Binary Systems at Third Post-Minkowskian Order. [PDF]
Physical Review Letters, 2019 We present the amplitude for classical scattering of gravitationally interacting massive scalars at third post-Minkowskian order. Our approach harnesses powerful tools from the modern amplitudes program such as generalized unitarity and the double-copy ...
Z. Bern +5 more
semanticscholar +1 more source
Massive on-shell supersymmetric scattering amplitudes
Journal of High Energy Physics, 2019 We introduce a manifestly little group covariant on-shell superspace for massive particles in four dimensions using the massive spinor helicity formalism.
Aidan Herderschee +2 more
doaj +1 more source
Universal opening of four-loop scattering amplitudes to trees [PDF]
Journal of High Energy Physics, 2020 The perturbative approach to quantum field theories has made it possible to obtain incredibly accurate theoretical predictions in high-energy physics.
S. Ramírez-Uribe +4 more
semanticscholar +1 more source
MHV graviton scattering amplitudes and current algebra on the celestial sphere [PDF]
Journal of High Energy Physics, 2020 The Cachazo-Strominger subleading soft graviton theorem for a positive helicity soft graviton is equivalent to the Ward identities for SL2ℂ¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb}
Shamik Banerjee +2 more
semanticscholar +1 more source
Unifying relations for scattering amplitudes
Journal of High Energy Physics, 2018 We derive new amplitudes relations revealing a hidden unity among a wideranging variety of theories in arbitrary spacetime dimensions. Our results rely on a set of Lorentz invariant differential operators which transmute physical tree-level scattering ...
Clifford Cheung +2 more
doaj +1 more source
Automating scattering amplitudes with chirality flow
European Physical Journal C: Particles and Fields, 2022 Recently we introduced the chirality-flow formalism, a method which builds on the spinor-helicity formalism and is inspired by the color-flow idea in QCD.
Andrew Lifson +2 more
doaj +1 more source
Amplitudes, observables, and classical scattering
Journal of High Energy Physics, 2019 We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result
David A. Kosower +2 more
doaj +1 more source