FIG. 11: Summary of the branching fraction measurements of three-prong τ decays. Russian Federation and the Russian Federal Agency for Atomic Energy; the Slovenian Re- search Agency; the Swiss National Science Foundation; the National Science Council and the Ministry of Education of Taiwan; and the U.S. Department of Energy. This work is supported by a Grant-in-Aid from MEXT for Science Research in a Priority Area (”New Development of Flavor Physics”), and from JSPS for Creative Scientific Research (”Evolu- tion of Tau-lepton Physics”). [1] J. Wess and B. Zumino, Phys. Lett. B 37 , 95 (1971); E. Witten, Nucl. Phys. B 223 , 422 (1983); ibid . 223 , 433 (1983). [2] U. Kilian et al. , Z. Phys. C 62 , 413 (1994); K. Kiers et al. Phys. Rev. D 78 , 113008 (2008). [3] E. G´ amiz et al. , Phys. Rev. Lett. 94 , 011803 (2005). [4] R. Barate et al. (ALEPH Collaboration), Eur. Phys. J. C 4 , 29 (1998). 25 8.5 9 9.5 CLEO3 03 0.46) % (9.13 BABAR 08 0.13) % (8.83 This work 0.26) % (8.42  decay Branching ratio of  2 3 4 5 6 -3 10 DELPHI 97 -3 10 0.80) (4.90 ALEPH 98 -3 10 0.47) (2.14 CLEO 99 -3 10 0.61) (3.46 OPAL 00 -3 10 0.95) (3.60 CLEO3 03 -3 10 0.40) (3.84 OPAL 04 -3 10 0.66) (4.15 BABAR 08 -3 10 0.09) (2.73 This work -3 10 0.17) (3.30  decay  K Branching ratio of  1 1.5 2 -3 10 ALEPH 98 -3 10 0.27) (1.63 CLEO 99 -3 10 0.31) (1.45 OPAL 00 -3 10 0.69) (0.87 CLEO3 03 -3 10 0.11) (1.55 BABAR 08 -3 10 0.04) (1.35 This work -3 10 0.06) (1.55  decay  KK Branching ratio of  0 10 20 30 40 -6 10 CLEO3 03 -5 10 < 3.70 BABAR 08 -5 10 0.17) (1.58 This work -5 10 0.26) (3.29 ALEPH 98 -4 10 < 1.9  decay  KKK Branching ratio of 