Results 81 to 90 of about 2,316,597 (371)
Near-threshold hadron scattering with effective field theory [PDF]
EPJ Web of Conferences. When an exotic hadron locates near the threshold with the channel couplings, the internal structure of the exotic hadron is related to the scattering length. To incorporate the threshold effect, the Flatté amplitude has been often used to determine the
Sone Katsuyoshi, Hyodo Tetsuo
doaj +1 more source
Scattering amplitudes of fermions on monopoles
Journal of High Energy Physics, 2023 Abstract We consider scattering processes involving massless fermions and ’t Hooft-Polyakov magnetic monopoles in a minimal SU(2) model and in the Grand Unified SU(5) theory. We construct expressions for on-shell amplitudes for these processes in the J = 0 partial wave using the spinor helicity basis consisting of single-particle ...
openaire +3 more sources
Three-Body Scattering Below Breakup Threshold: An Approach without using Partial Waves [PDF]
, 1999 The Faddeev equation for three-body scattering below the three-body breakup threshold is directly solved without employing a partial wave decomposition. In the simplest form it is a three-dimensional integral equation in four variables. From its solution
Elster, Ch., Gloeckle, W., Schadow, W.
core +4 more sources
The chiral representation of the $\pi N$ scattering amplitude and the pion-nucleon sigma term [PDF]
, 2011 We present a novel analysis of the $\ensuremath{\pi}N$ scattering amplitude in Lorentz covariant baryon chiral perturbation theory renormalized in the extended-on-mass-shell scheme.
J. M. Alarcón, J. A. Oller, J. Camalich
semanticscholar +1 more source
, 2013 The purpose of this review is to bridge the gap between a standard course in quantum field theory and recent fascinating developments in the studies of on-shell scattering amplitudes. We build up the subject from basic quantum field theory, starting with Feynman rules for simple processes in Yukawa theory and QED.
Elvang, Henriette, Huang, Yu-tin
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BFKL equation in the next-to-leading order: solution at large impact parameters
European Physical Journal C: Particles and Fields, 2019 In this paper, we show (1) that the NLO corrections do not change the power-like decrease of the scattering amplitude at large impact parameter ($$b^2 \,>\,r^2 \exp ( 2{\bar{\alpha }}_S\eta (1 + 4 {\bar{\alpha }}_S) )$$ b2>r2exp(2α¯Sη(1+4α¯S)) , where r ...
Carlos Contreras +2 more
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A Tutorial on the Classical Theories of Electromagnetic Scattering and Diffraction
Nanophotonics, 2020 Starting with Maxwell’s equations, we derive the fundamental results of the Huygens-Fresnel-Kirchhoff and Rayleigh-Sommerfeld theories of scalar diffraction and scattering.
Mansuripur Masud
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Unitarized pion-nucleon scattering amplitude from inverse amplitude method
, 2003 In a recent work on low energy pion-nucleon scattering, instead of using chiral perturbation theory (ChPT) amplitude, we started from a pion-nucleon {\it soft-pion} result and used elastic unitarity directly as a dynamical constraint to construct first ...
Arndt +22 more
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Small-angle scattering on a system of magnetic and electric charges [PDF]
, 1996 The generalization of the conformal scattering method for small-angle scattering processes involving magnetic monopoles and ordinary charges is constructed.
Penttinen, M.
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The pion-pion scattering amplitude. IV: Improved analysis with once subtracted Roy-like equations up to 1100 MeV [PDF]
, 2011 We improve our description of π π scattering data by imposing additional requirements on our previous fits, in the form of once-subtracted Roy-like equations, while extending our analysis up to 1100 MeV.
R. García-Martín +4 more
semanticscholar +1 more source