TY - JOUR
T1 - Scattering amplitudes in the light-front formalism
AU - Cruz-Santiago, C.
AU - Kotko, P.
AU - Stas̈to, A. M.
N1 - Funding Information:
This work was supported in part by the DOE grant No. DE-SC-0002145 , grant No. DE-FG02-93ER40771 and by the Polish NCN grant DEC-2011/01/B/ST2/03915 . Diagrams have been prepared with Jaxodraw [89] .
Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - We review the methods of the computation of the scattering amplitudes in the light-front formalism. Basics of the light-front quantization, as well as helicity methods and different types of recursion relations for scattering amplitudes are reviewed. Computation of the wave-functions and fragmentation functions within the light-front theory are presented. Methods for obtaining off-shell scattering amplitudes are presented together with the new recursion relations which include the gauge invariant extensions of the off-shell amplitudes. Finally, relation between the formalism which makes use of the Wilson lines and light-front formalism is discussed.
AB - We review the methods of the computation of the scattering amplitudes in the light-front formalism. Basics of the light-front quantization, as well as helicity methods and different types of recursion relations for scattering amplitudes are reviewed. Computation of the wave-functions and fragmentation functions within the light-front theory are presented. Methods for obtaining off-shell scattering amplitudes are presented together with the new recursion relations which include the gauge invariant extensions of the off-shell amplitudes. Finally, relation between the formalism which makes use of the Wilson lines and light-front formalism is discussed.
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U2 - 10.1016/j.ppnp.2015.07.002
DO - 10.1016/j.ppnp.2015.07.002
M3 - Review article
AN - SCOPUS:84942818163
SN - 0146-6410
VL - 85
SP - 82
EP - 131
JO - Progress in Particle and Nuclear Physics
JF - Progress in Particle and Nuclear Physics
ER -