Results 81 to 90 of about 2,118,889 (347)

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, Malin Sjödahl, Zenny Wettersten   +2 more
doaj   +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, Sudip Ghosh, Partha Paul   +2 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, Seth Koren, Timothy Trott   +2 more
doaj   +1 more source

Pion-pion scattering amplitude [PDF]

Physical Review D, 2005
We obtain reliable ππ scattering amplitudes consistent with experimental data, both at low and high energies, and fulfilling appropriate analyticity properties. We do this by first fitting experimental low energy [s^(1/2) ≤ (1.42 GeV] phase shifts and inelasticities with expressions that incorporate analyticity and unitarity.
Peláez Sagredo, José Ramón, Ynduráin, F. J.   +1 more
openaire   +4 more sources

Weights and recursion relations for ϕ p tree amplitudes from the positive geometry

Journal of High Energy Physics, 2020
Recently, the accordiohedron in kinematic space was proposed as the positive geometry for planar tree-level scattering amplitudes in the ϕ p theory [1]. The scattering amplitudes are given as a weighted sum over canonical forms of some accordiohedra with
Ryota Kojima
doaj   +1 more source

Plahte diagrams for string scattering amplitudes

Journal of High Energy Physics, 2021
Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane.
Pongwit Srisangyingcharoen, Paul Mansfield   +1 more
doaj   +1 more source

Scattering amplitudes in Lifshitz spacetime [PDF]

Classical and Quantum Gravity, 2014
We consider the calculation of scattering amplitudes in field theories dual to Lifshitz spacetimes. These amplitudes provide an interesting probe of the IR structure of the field theory; our aim is to use them to explore the observable consequences of the singularity in the spacetime.
Andrade, T., Ross, Simon F., Lei, Y.
openaire   +4 more sources

M5-brane and D-brane scattering amplitudes

Journal of High Energy Physics, 2017
We present tree-level n-particle on-shell scattering amplitudes of various brane theories with 16 conserved supercharges. These include the world-volume theory of a probe D3-brane or D5-brane in 10D Minkowski spacetime as well as a probe M5-brane in 11D ...
Matthew Heydeman, John H. Schwarz, Congkao Wen   +2 more
doaj   +1 more source

Massive spin-2 scattering amplitudes in extra-dimensional theories [PDF]

Physical Review D, 2020
Author(s): Chivukula, R Sekhar; Foren, Dennis; Mohan, Kirtimaan A; Sengupta, Dipan; Simmons, Elizabeth H | Abstract: In this paper we describe in detail the computation of the scattering amplitudes of massive spin-2 Kaluza-Klein excitations in a ...
R. Chivukula, D. Foren, K. Mohan, D. Sengupta, E. Simmons   +4 more
semanticscholar   +1 more source

Scattering Amplitudes at LHC

Nuclear and Particle Physics Proceedings, 2015
AbstractI analyze the algebraic patterns underlying the structure of scattering amplitudes in quantum field theory. I focus on the decomposition of amplitudes in terms of independent functions and the systems of differential equations the latter obey.
openaire   +4 more sources