Results 51 to 60 of about 2,316,597 (371)
Analytic structure of the n =7 scattering amplitude in N =4 SYM theory in multi-Regge kinematics: Conformal Regge cut contribution [PDF]
, 2014 In this second part of our investigation of the analytic structure of the $2\to5$ scattering amplitude in the planar limit of $\mathcal{N}=4$ SYM in multi-Regge kinematics we compute, in all kinematic regions, the Regge cut contributions in leading order.
J. Bartels +2 more
semanticscholar +1 more source
On the Cuts of Scattering Amplitudes [PDF]
Nuclear Physics B - Proceedings Supplements, 2008 The use of complex analysis for computing one-loop scattering amplitudes is naturally induced by generalised unitarity-cut conditions, fulfilled by complex values of the loop variable. We report on two techniques: the cut-integration with spinor-variables as contour integrals of rational functions; and the use of the Discrete Fourier Transform to ...
openaire +4 more sources
Scattering Amplitudes: Celestial and Carrollian
Physical Review Letters, 2022 21 ...
Arjun Bagchi +3 more
openaire +3 more sources
Complex forward scattering coefficient for signal characterisation
The Journal of Engineering, 2019 In this study, modelling and characteristics analysis of forward scattering coefficients and echoes are investigated. Traditional ground-target forward scattering signal model has not considered the impact of scattering phase; thus it is not accurate ...
Jing Chen +3 more
doaj +1 more source
Photoacoustics, 2020 Time-domain Brillouin scattering is an opto-acousto-optical probe technique for the evaluation of transparent materials. Via optoacoustic conversion, ultrashort pump laser pulses launch coherent acoustic pulses in the sample.
Vitalyi E. Gusev
doaj +1 more source
Δ-algebra and scattering amplitudes [PDF]
Journal of High Energy Physics, 2019 Abstract In this paper we study an algebra that naturally combines two familiar operations in scattering amplitudes: computations of volumes of polytopes using triangulations and constructions of canonical forms from products of smaller ones.
Sebastian Mizera +6 more
openaire +4 more sources
High-energy quark-quark scattering and the eikonal approximation [PDF]
, 1997 The high-energy quark-quark scattering amplitude is calculated first in the case of scalar QCD, using Fradkin's approach to derive the scalar quark propagator in an external gluon field and computing it in the eikonal approximation.
Meggiolaro, Enrico
core +2 more sources
N-point tree-level scattering amplitude in the new Berkovits’ string [PDF]
, 2013 A bstractWe give a proof that the pure spinor superstring theory in a novel infinite tension limit, as was discussed recently by Berkovits, reproduces the tree-level scattering amplitudes of the ten-dimensional $ \mathcal{N} $ = 1 super Yang-Mills in its
Humberto Gomez, E. Y. Yuan
semanticscholar +1 more source
A scattering amplitude for massive particles in AdS
Journal of High Energy Physics, 2022 In this paper, we propose a conformally covariant momentum space representation of CFT correlation functions. We call it the AdS S-matrix. This representation has the property that it reduces to the S-matrix in the flat space limit.
Abhijit Gadde, Trakshu Sharma
doaj +1 more source
An Analysis of the New LHC Data through the Dispersion Relations [PDF]
, 2016 We analyse the tension between the (indirect) measurements of the total cross section, and show the impact of various assumptions on the extraction of the parameters from the elastic scattering amplitude, with a special attention to the total cross ...
Cudell, J. -R., Selyugin, O. V.
core +1 more source