Tag: CAST
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Casting light on the dark sector of the universe
Casting light on the dark sector of the universe On axions The cosmologically established cold dark matter (CDM) makes about 84% of the Universe’s total mass. In the era of precision cosmology, the composition of the CDM remains a mystery. Among the proposed hypothetical particles which could address this fundamental question in physics, certainly, the
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CAST: from Solar to Dark Matter Axions searches
CAST: from Solar to Dark Matter Axions searches CERN’s Axion Solar telescope (CAST) has been running since 2003 searching for the axion: a hypothetical particle introduced in 1978 as a consequence of the Peccei-Quinn mechanism aiming to solve the strong CP problem, i.e why is the neutron electric dipole moment limit some ten orders of
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Searching for axions: old and new ideas
Searching for axions: old and new ideas QCD, the theory of strong interactions allows the violation of CP symmetry that would result in a non-zero value for the neutron electric dipole moment. Current measurements constrain the neutron EDM to be one trillionth of the size predicted by QCD (because of CP violation). This means that
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Search for axions in streaming dark matter
Search for axions in streaming dark matter Streaming dark matter (DM) axions may be the better source for their discovery than the widely assumed isotropic DM. Because, a large axion flux enhancement can take place, temporally, due to gravitational lensing when the Sun and/or a planet are aligned with the stream or an axion caustic