Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-03-30
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages
Scientific paper
Photonic SUSY two-loop corrections to the muon magnetic moment are contributions from diagrams where an additional photon loop is attached to a SUSY one-loop diagram. These photonic corrections are evaluated exactly, extending a leading-log calculation by Degrassi and Giudice. Compact analytical expressions are provided and the numerical behaviour is discussed. The photonic corrections reduce the SUSY one-loop result by 7...9%. The new terms are typically around ten times smaller than the leading logarithms, but they can be larger and have either sign in cases with large SUSY mass splittings. We also provide details on renormalization and regularization and on how to incorporate the photonic corrections into a full SUSY two-loop calculation.
Schafer Marco
Stöckinger Dominik
Stöckinger-Kim H.
Weitershausen von P.
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