Francis Halzen

Francis Louis Halzen (born 23 March 1944) is a Belgian-American particle physicist and Nobel laureate. As of October 2026 he is the Vilas Research Professor and Gregory Breit Professor at the University of Wisconsin–Madison, and also the principal investigator of the IceCube Neutrino Observatory at the Amundsen–Scott South Pole Station in Antarctica, the world's largest neutrino detector. In 2026, Halzen was awarded the Nobel Prize in Physics "for decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos of astrophysical origin."[edit]