e tau and H -> mu tau, on the contrary, break this symmetry as long as their branching ratios (BR) are of different size since systematic differences of the kinematic properties of the electron and muon are implied within each decay. The differing branching ratios are motivated by a bound on the product of the two LFV couplings derived from mu -> e gamma. The usage of the "Symmetry Method" allows for an estimation of the background mainly based on data and hence reduces the dependence on simulated events. However, it also implies that the analysis is only sensitive to the difference in branching ratios of H -> e tau and H -> mu tau and does not allow for measuring their absolute values. The difference in branching ratios, Delta = BR(H -> mu tau) - BR(H -> e tau), is measured to be (0.25+/-0.10)% which indicates that the data favours a larger branching ratio for the decay H -> mu tau than for the decay H -> e tau with a significance of 2.5 sigma. An upper limit at 95% confidence level of 0.42% is set on the difference Delta, the expected limit is (0.19+0.08/-0.05)%. Combinations with partner analyses which use templates from simulations for background estimation are performed, assuming the respective other LFV signal to be zero. Observed (expected) upper limits at 95% confidence level on the branching ratios of the decays H -> e tau and H -> mu tau are derived to be 0.23% ((0.12+0.05/-0.03)%) and 0.17% ((0.09+0.04/-0.03)%), respectively." /> e tau and H -> mu tau, on the contrary, break this symmetry as long as their branching ratios (BR) are of different size since systematic differences of the kinematic properties of the electron and muon are implied within each decay. The differing branching ratios are motivated by a bound on the product of the two LFV couplings derived from mu -> e gamma. The usage of the "Symmetry Method" allows for an estimation of the background mainly based on data and hence reduces the dependence on simulated events. However, it also implies that the analysis is only sensitive to the difference in branching ratios of H -> e tau and H -> mu tau and does not allow for measuring their absolute values. The difference in branching ratios, Delta = BR(H -> mu tau) - BR(H -> e tau), is measured to be (0.25+/-0.10)% which indicates that the data favours a larger branching ratio for the decay H -> mu tau than for the decay H -> e tau with a significance of 2.5 sigma. An upper limit at 95% confidence level of 0.42% is set on the difference Delta, the expected limit is (0.19+0.08/-0.05)%. Combinations with partner analyses which use templates from simulations for background estimation are performed, assuming the respective other LFV signal to be zero. Observed (expected) upper limits at 95% confidence level on the branching ratios of the decays H -> e tau and H -> mu tau are derived to be 0.23% ((0.12+0.05/-0.03)%) and 0.17% ((0.09+0.04/-0.03)%), respectively." /> FreiDok plus - Search for lepton-flavour violating decays of the Higgs boson with the ATLAS detector
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