华盛顿时间７月２０已以日本名古屋大学丹羽公雄教授为中心的日、美、韩、希腊等国５４人组成的国际科研小组，利用美国费米实验室的加速器经过３年的合作研究，首次发现了表明τ子中微子存在的直接证据。至此，粒子物理学标准模型中的１２个基本粒子自１８９７年电子被发现后 Washington Time July 20 The international scientific research group of 54 people from Japan, the United States, South Korea, Greece and other countries centering on Professor Takeshi Haneda from Nagoya University in Japan, for the first time, found out that the international scientific research group consisting of 54 researchers from Fermilab Accelerator in the United States There is direct evidence of the presence of tau neutrinos. So far, 12 elementary particles in the standard model of particle physics have been found since 1897