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Should the Nobel Prize for shape-shifting neutrinos have also gone to Soviet scientists?
Thursday, 15 October 2015 12:46

Last week the Nobel prize in physics was awarded to Takaaki Kajita from Japan, and Arthur B. McDonald from Canada, for the discovery of neutrino oscillations between different `flavors' in flight.

Kajita and McDonald observed the shape-shifting effects, presuming the existence of neutrinos with mass. It was the theoretical effects, identified by Russian scientists and predicted by American physicists, that helped to visualize the experiment.

One of the effects that Kajita observed was suggested by Soviet physicist, Bruno Pontecorvo. Another, the MSW effect, was discovered by Alexei Smirnov. In fact, the MSW effect studied by McDonald was named after Smirnov and his collaborators, taking the initials of the scientists' last names: Mikheyev-Smirnov-Wolfenstein (MSW). They were nominated for the Nobel Prize at the end of 1980s, but did not win.

The MSW is an effect in which a neutrino of one type changes into another in the atmosphere of an electron's variable density. It was predicted in 1978 by American physicist, Lincoln Wolfenstein. In 1986 it was theoretically studied by Smirnov and his colleague, Stanislav Mikheyev, at the Institute of Nuclear Research in Russia. 

Aleksey Smirnov. Source: Personal archive

"I am a theorist," Smirnov told RBTH. "The Nobel prize was awarded exclusively for experimental work and I believe this is completely fair. I personally know both winners and am amazed by the work they've done. Moreover, several years ago I personally nominated them for the prize.''

Mikheyev, Smirnov, and Wolfenstein first proposed that interactions with electrons in the Sun could exacerbate the personality disorder of neutrinos, which means that the presence of matter could cause the neutrinos to oscillate more vigorously between different types. In the general description of Kajita's and McDonald's work, the Nobel committee mentioned the contribution of the Russian theorists.

Mikheyev and Wolfenstein are no longer alive. Since 1992 Alexey Smirnov has worked at the International Center for Theoretical Physics in Italy, as well as in Heidelberg, Germany at the Max Plank Institute for Radio Astronomy. Professor Smirnov has received several awards for his theoretical studies of the neutrino, including the Bruno Pontecorvo Prize (Russia) and the Sakurai Prize (U.S.).

According to Professor Smirnov, neutrino research will in the future help conduct tomographies of the Earth, which will be useful for studying the subsoil, and also help us to understand the structure of the Universe.

source:
 http://rbth.co.uk/science_and_tech/2015/10/15/should_the_nobel_prize_for_shape-shifting_neutrinos_have_al_50089.html

 

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