A Case Study of the Sensitivity to LFV Operators with Precision Measurements and the LHC

We compare the sensitivity of precision measurements of lepton flavour observables to the reach of the LHC in a case study of lepton-flavour violating operators of dimension six with two leptons and two quarks. For light quarks precision measurements always yield the more stringent constraints. The LHC complements precision measurements for operators with heavier quarks. Competitive limits can already be set on the cutoff scale $\mathrm{\Lambda }$ > 600 - 800 GeV for operators with right-handed $\tau$ leptons using the LHC run 1 data.