TY - JOUR
T1 - Instanton-induced amplitudes in a supersymmetric theory
AU - McLerran, L.
AU - Vainshtein, Arkady
AU - Voloshin, Mikhail B
PY - 1990/10/18
Y1 - 1990/10/18
N2 - We consider the effective lagrangian for multiple self-interaction of matter fields induced by instantons in a weakly coupled SU (2) supersymmetric Yang-Mills theory with one matter flavor. By using the supersymmetric instanton calculus, we come to the surprising conclusion that the interaction induced by instantons in the one instanton sector of the theory is strictly local for scalar particle emission, accompanied by fermion number violation. The contribution of instantons arises only from instantons of zero scale size. The restoration of unitarity in high-energy scattering is thus only possible through multi-instanton-antiinstanton effects.
AB - We consider the effective lagrangian for multiple self-interaction of matter fields induced by instantons in a weakly coupled SU (2) supersymmetric Yang-Mills theory with one matter flavor. By using the supersymmetric instanton calculus, we come to the surprising conclusion that the interaction induced by instantons in the one instanton sector of the theory is strictly local for scalar particle emission, accompanied by fermion number violation. The contribution of instantons arises only from instantons of zero scale size. The restoration of unitarity in high-energy scattering is thus only possible through multi-instanton-antiinstanton effects.
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U2 - 10.1016/0370-2693(90)91252-7
DO - 10.1016/0370-2693(90)91252-7
M3 - Article
AN - SCOPUS:13644270252
VL - 249
SP - 261
EP - 265
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
SN - 0370-2693
IS - 2
ER -