Top physicist Yoji Totsuka dies at 66 (July 10, 2008)
Top Japanese physicist Yoji Totsuka, who earned recognition for discovering that elementary particles called neutrinos have mass, died of cancer early Wednesday. He was 66.
Totsuka, who served as a special emeritus professor at the University of Tokyo, was seen as a strong candidate for a Nobel prize. He won Japan's prestigious Order of Culture decoration in 2004, and in 2007 he was awarded a Franklin Medal at the Franklin Institute Awards, often seen as a gateway to a Nobel prize.
The 66-year-old was a favorite pupil of Masatoshi Koshiba, another special emeritus professor at the University of Tokyo who won a Nobel Prize in Physics in 2002. It had been hoped that Totsuka would be awarded a Nobel prize to produce the first teacher-pupil pair to win Nobel prizes.
Totsuka was born in Fuji, Shizuoka Prefecture. He completed his at Ph.D. at the University of Tokyo in 1972.
From the mid-1990s, Totsuka had been in charge of the Super-Kamiokande observatory at the University of Tokyo's Institute for Cosmic Ray Research in Hida, Gifu Prefecture, and examined neutrinos closely with over 100 researchers from Japan and overseas. In 1998, he obtained positive proof that neutrinos have non-zero mass, overturning the standard belief up until then that they had no mass.