Toshihide Masukawa

from Wikipedia, the free encyclopedia

Toshihide Maskawa ( Japanese 益川敏英, Masukawa Toshihide ; sometimes Maskawa Romanized * 7. February 1940 in Nagoya , Aichi Prefecture ; †  23. July 2021 in Kyoto ) was a Japanese physicist who, through his work on the CP violation became known . He received the Nobel Prize in Physics in 2008 .

Toshihide Masukawa (2008)

life and work

In 1962 Masukawa received his degree from Nagoya University , and in 1967 his doctorate. He then worked there as an assistant, from 1970 at the University of Kyoto . In 1976 he moved to the Institute for Nuclear Research at the University of Tokyo for an assistant professorship . From 1980 he was a professor at the Yukawa Institute for Theoretical Physics at Kyoto University, which he headed from 1997 to 1999. Since 2003 Masukawa has taught at the Sangyō University in Kyoto .

His article CP Violation in the Renormalizable Theory of Weak Interaction , which he wrote with Makoto Kobayashi in 1973, is the ninth most cited article on INSPIRE-HEP (as of 2021). The CKM matrix (sometimes just named after Kobayashi and Masukawa), which describes the mixture of mass eigenstates and eigenstates of the weak interaction in the standard model of particle physics , was the result of this work. It predicted three generations of quarks and had the CP violation as a consequence, which could thus be classified in the Standard Model. The model of Kobayashi and Masukawa was influenced by the school of Sakata , both of whom were students in Nagoya.

In 1995, the sixth quark, the top quark, was discovered by the CDF experiment at Fermilab , and in 2001 the KEK and SLAC confirmed the CP violation during the decay of B mesons with the Belle ( KEKB ) and BaBar (PEP-II) experiments .

Masukawa was married to Akiko Masukawa. The marriage resulted in two sons. He died of cancer on July 23, 2021 at the age of 81.

Awards

Web links

Commons : Toshihide Masukawa  - collection of images, videos and audio files
  • Makoto Kobayashi, Toshihide Maskawa: CP Violation in the Renormalizable Theory of Weak Interaction . In: Progress of Theoretical Physics . tape 49 , 1973, pp. 652-657 , doi : 10.1143 / PTP.49.652 (English).
  • Information from the Nobel Foundation on the 2008 award ceremony for Toshihide Maskawa

Individual evidence

  1. a b Toshihide Masukawa, 2008 Nobel laureate in physics, dies at 81. In: japantimes.co.jp . July 30, 2021, accessed August 2, 2021 .
  2. inspirehep.net.Retrieved August 2, 2021.