Search for "Sterile Neutrino" Draws a Blank:

Discussion in 'General Science & Technology' started by paddoboy, Aug 8, 2016.

  1. paddoboy Valued Senior Member

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    IceCube search for the 'sterile neutrino' draws a blank
    August 8, 2016

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    The IceCube Laboratory at the Amundsen-Scott South Pole Station in Antarctica. Credit: Erik Beiser, IceCube/NSF
    In an effort to fill in the blanks of the Standard Model of particle physics, science has been conducting a diligent search for a hypothesized particle known as the "sterile neutrino."

    Now, with the latest results from an icy particle detector at the South Pole, scientists are almost certain that there is no such particle.

    If discovered, the sterile neutrino would have added to the neutrino family portrait and helped explain a number of puzzles that suggest the existence of more than the three known flavors of neutrinos. Ultimately, such a particle could also help resolve the mystery of the origin of dark matter and the matter/antimatter asymmetry in the universe.





    Read more at: http://phys.org/news/2016-08-icecube-sterile-neutrino-blank.html#jCp
     
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  3. paddoboy Valued Senior Member

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    Supplementary Article:

    Evidence mounts that neutrinos are the key to the universe's existence
    August 8, 2016 by Hayley Dunning

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    The T2K near detector. Credit: Imperial College London

    New experimental results show a difference in the way neutrinos and antineutrinos behave, which could explain why matter persists over antimatter.

    The results, from the T2K experiment in Japan, show that the degree to which neutrinos change their type differs from their antineutrino counterparts. This is important because if all types of matter and antimatter behave the same way, they should have obliterated each other shortly after the Big Bang.

    So far, when scientists have looked at matter-antimatter pairs of particles, no differences have been large enough to explain why the universe is made up of matter – and exists – rather than being annihilated by antimatter.



    Read more at: http://phys.org/news/2016-08-evidence-mounts-neutrinos-key-universe.html#jCp
     
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  5. paddoboy Valued Senior Member

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    And a third article:
    Hmmm, Neutrino's seem to be the flavour of the month...

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    ) no pun intended.


    NOvA shines new light on how neutrinos behave

    August 8, 2016

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    An illustration of the three neutrino mass states and the three flavors that make them up (electron, muon and tau), as they were previously though to mix. NOvA's new result shows that the third mass state may not have equal amounts of muon (yellow jellybeans) and tau (blue jellybeans) flavors. Credit: Image: Fermilab/Sandbox Studios.
    Scientists from the NOvA collaboration have announced an exciting new result that could improve our understanding of the behavior of neutrinos.



    Read more at: http://phys.org/news/2016-08-nova-neutrinos.html#jCp
     
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