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arXiv · hep-ph/9812314

Lepton-Flavour Violation in Ordinary and Supersymmetric Grand Unified Theories

C. S. Lim·Bungo Taga
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Abstract

By an explicit calculation we show that in ordinary SU(5) logarithmic divergence in the amplitude of $μ\to eγ$ cancels among diagrams and remaining finite part is suppressed by at least $1/M_{GUT}^2$. In SUSY SU(5), when the effect of flavour changing wave function renormalization is taken into account such logarithmic correction disappears, provided a condition is met among SUSY breaking masses. In SUGRA-inspired SUSY GUT the remaining logarithmic effect is argued not to be taken as a prediction of the theory.

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C. S. Lim, Bungo Taga. 1998-12-10. Lepton-Flavour Violation in Ordinary and Supersymmetric Grand Unified Theories. https://doi.org/10.1143/jpsj.69.369

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