16-27 August 2021
America/Los_Angeles timezone

Lepton Flavor Violating Mixings at 2-Loop from the S-Matrix

Not scheduled
ZOOM videoconf (SLAC)

ZOOM videoconf



Mehmet Asim Gumus (Sissa)


Standard Model has lepton flavor conservation as an accidental symmetry, and there has been a great deal of experimental effort went into detecting events leading to its violation (LFV) in search of signs for new physics. Muon decays into electrons and an electron & photon are two promising examples to such events in near future. In this ongoing work, we consider dimension 6 operators in Standard Model EFT that account for these decays and draw a picture of renormalization group mixings above electroweak scale between LFV dim-6 operators up to two loops. We present a handy way of extracting two loop anomalous dimensions using the on-shell S-matrix and unitarity cuts, and we explicitly calculate some of them.

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