Lepton-flavour-violating gluonic operators: constraints from the LHC and low energy experiments

Yi Cai, Michael A. Schmidt, German Valencia

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5 Citations (Scopus)


Effective operators provide a model-independent description of physics beyond the standard model that is particularly useful given the absence of any signs of new physics at the Large Hadron Collider (LHC). We recast previous LHC analyses to set limits on lepton-flavour-violating gluonic effective operators of dimension 8 and compare our results to existing limits from low-energy precision experiments. Current LHC data constrains the scale Λ of the effective operators to be larger than Λ ≳ 0.5 − 1.6 TeV depending on the flavour and thus provides the most stringent limit for all operators apart from parity-conserving operators of the form GGμ¯ PL , Re, where μ-e conversion in nuclei poses the most stringent constraint.

Original languageEnglish
Article number143
Number of pages17
JournalJournal of High Energy Physics
Issue number5
Publication statusPublished - 23 May 2018


  • Beyond Standard Model
  • Effective Field Theories

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