akaaki Kajita and Arthur B McDonald share this year’s Nobel Prize for Physics for experiments demonstrating that neutrinos, known as nature’s most elusive elementary particles, have mass and can change identity. SHOWS: STOCKHOLM, SWEDEN (OCTOBER 5, 2015) (REUTERS- ACCESS ALL) 1. NOBEL PHYSICS PRIZE ANNOUNCERS ARRIVING 2. (SOUNDBITE) (English) ROYAL ACADEMY OF SCIENCES SECRETARY GENERAL, GORAN K. HANSSON, SAYING: “The Royal Swedish Academy of Sciences has decided to award the 2015 Nobel Prize in Physics to Takaaki Kajita and Arthur B. McDonald for the discovery of neutrinos which shows neutrinos have mass.” 3. (SOUNDBITE) (English) CHAIR OF NOBEL COMMITTEE FOR PHYSICS, PROFESSOR ANNE L’HULLIER, SAYING: “At this moment in this room there are more than a billion neutrinos, which travel almost at the speed of light. These elementary particles are the second most abundant in the universe next to the photons which are the particles of light. They are created in nuclear reactions, for example in the sun and stars or in nuclear power points. They interact very little with the environment, for example they can go through earth without being stopped. There are three kinds of neutrinos, electron neutrinos, muons neutrinos and taus neutrinos. This years prize is awarded to the experiment discovery that neutrinos can change identity. For example a muon neutrino can become a taus neutrino and vice versa, they oscillate. The observations were made by two research groups, one at the Super-Kamiokande Detector in Japan and one at the Sudbury Neutrino Observatory in Canada. The discovery implies that neutrinos, which were believed to be mass-less, do have a mass, even if very little, and since there are so many of them it changes our view of the universe.” 4. PRESENTATION ON NEUTRINOS BY NOBEL COMMITTEE MEMBER PROFESSOR OLGA BOTNER STORY: Japan’s Takaaki Kajita and Canada’s Arthur B. McDonald won the 2015 Nobel Prize for Physics for their discovery that neutrinos have mass, the award-giving body said on Tuesday (October 6). The Royal Academy of Sciences Secretary General Goran K. Hansson made the announcement in Stockholm. “The Royal Swedish Academy of Sciences has decided to award the 2015 Nobel Prize in Physics to Takaaki Kajita and Arthur B. McDonald for the discovery of neutrinos which shows neutrinos have mass,” Hansson announced. The Royal Swedish Academy of Sciences will award the prize of 8 million Swedish crown ($962,000) to the pair. Professor Anne L’Hullier, Chair of the Nobel Committee for Physics highlighted the importance of the discovery “At this moment in this room there are more than a billion neutrinos, which travel almost at the speed of light. These elementary particles are the second most abundant in the universe next to the photons which are the particles of light. They are created in nuclear reactions, for example in the sun and stars or in nuclear power points. They interact very little with the environment, for example they can go through earth without being stopped. There are three kinds of neutrinos, electron neutrinos, muons neutrinos and taus neutrinos. This years prize is awarded to the experiment discovery that neutrinos can change identity. For example a muon neutrino can become a taus neutrino and vice versa, they oscillate. The observations were made by two research groups, one at the Super-Kamiokande Detector in Japan and one at the Sudbury Neutrino Observatory in Canada. The discovery implies that neutrinos, which were believed to be mass-less, do have a mass, even if very little, and since there are so many of them it changes our view of the universe.” Physics is the second of this year’s Nobels. The prizes were first awarded in 1901 to honour achievements in science, literature and peace in accordance with the will of dynamite inventor and business tycoon Alfred Nobel.