HFLAV results for tau mass, lifetime and branching fractions through August 2024 The tau branching fractions are reported in two versions, one obtained with a common fit of the available measurements, and a second one with the same fit subjected to an additional unitarity constraint. Figure "tau-lept-univ-2023v1.pdf" reports the canonical tau lepton flavour universality test obtained with the non-unitarity-constrained branching fractions' fit results. Cite the results presented as S. Banerjee et al., Averages of b-hadron, c-hadron, and tau-lepton properties as of 2023, Phys. Rev. D113, (2026) 012008, arXiv:2411.18639, with specific result from doi:10.5281/zenodo.19446914. Alternatively use the bibtex record: @article{HFLAV:2024ctg, author = "Banerjee, Sw. and others", collaboration = "Heavy Flavor Averaging Group (HFLAV)", title = "{Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2023}", eprint = "2411.18639", archivePrefix = "arXiv", primaryClass = "hep-ex", doi = "10.1103/x87q-tld5", journal = "Phys. Rev.", volume = "D113", number = "1", pages = "012008", year = "2026" note = "{with specific result from \href{https://doi.org/10.5281/zenodo.19446914}{{\texttt{doi:10.5281/zenodo.19446914}}}}" }