The Nobel Prize in Physics 2015 recognises Takaaki Kajita in Japan and Arthur B. McDonald in Canada, for their key contributions to the experiments which demonstrated that neutrinos change identities. This metamorphosis requires that neutrinos have mass. The discovery has changed our understanding of the innermost workings of matter and can prove crucial to our view of the universe.
The 2015 Nobel Prize in Physics - Press release - NobelPrize.org
物理学賞を梶田先生が受賞。
ニュートリノ振動（ニュートリノに質量がある）の研究。スーパーカミオカンデでの観測結果がベースになっており、
Around the turn of the millennium, Takaaki Kajita presented the discovery that neutrinos from the atmosphere switch between two identities on their way to the Super-Kamiokande detector in Japan.
The 2015 Nobel Prize in Physics - Press release - NobelPrize.org
と書かれている。
（梶田先生は小柴先生の弟子にあたる。 その辺はインタビューとか出るだろう）
