Concept information
Preferred term
Mikheyev-Smirnov-Wolfenstein effect
Definition(s)
- The Mikheyev–Smirnov–Wolfenstein effect (often referred to as the matter effect) is a particle physics process which modifies neutrino oscillations in matter of varying density. The MSW effect is broadly analogous to the differential retardation of sound waves in density-variable media, however it also involves the propagation dynamics of three separate quantum fields which experience distortion. In free space, the separate rates of neutrino eigenstates lead to standard neutrino flavor oscillation. Within matter – such as within the Sun – the analysis is more complicated, as shown by Mikheyev, Smirnov and Wolfenstein. It leads to a wide admixture of emanating neutrino flavors, which provides a compelling solution to the solar neutrino problem. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Mikheyev%E2%80%93Smirnov%E2%80%93Wolfenstein_effect)
Broader concept(s)
Synonym(s)
- MSW effect
In other languages
URI
http://data.loterre.fr/ark:/67375/MDL-Z8ZW3X4H-1
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