Question: Arthur B. McDonald shared the Nobel Prize in Physics for 2015 with the Japanese physicist known for what type of work?

Related documents: [0]  [DOC] Arthur Bruce McDonald, {'1': ", '2': ", '3': ", '4': "} (born August 29, 1943) is a Canadian astrophysicist. McDonald is the director of the Sudbury Neutrino Observatory Institute and holds the Gordon and Patricia Gray Chair in Particle Astrophysics at Queen's University in Kingston, Ontario. He was awarded the 2015 Nobel Prize in Physics jointly with Japanese physicist Takaaki Kajita. [END] 
[1]  [DOC] Takaaki Kajita (梶田 隆章 , Kajita Takaaki ) is a Japanese physicist, known for neutrino experiments at the Kamiokande and its successor, Super-Kamiokande. In 2015, he was awarded the Nobel Prize in Physics jointly with Canadian physicist Arthur B. McDonald. [END]  
Answer: neutrino experiments
neutrino experiments