CP violation or new physics?

Discussion in 'General Science & Technology' started by paddoboy, Jul 25, 2016.

  1. paddoboy Valued Senior Member

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    CP violation or new physics?
    July 25, 2016 by Lisa Zyga feature

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    This is the "South Pillar" region of the star-forming region called the Carina Nebula. Like cracking open a watermelon and finding its seeds, the infrared telescope "busted open" this murky cloud to reveal star embryos tucked inside finger-like pillars of thick dust. Credit: NASA
    (Phys.org)—Over the past few years, multiple neutrino experiments have detected hints for leptonic charge parity (CP) violation—a finding that could help explain why the universe is made of matter and not antimatter. So far, matter-antimatter asymmetry cannot be explained by any physics theory and is one of the biggest unsolved problems in cosmology.



    Read more at: http://phys.org/news/2016-07-cp-violation-physics.html#jCp
     
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  3. paddoboy Valued Senior Member

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    http://arxiv.org/abs/1601.03736
    Hints for leptonic CP violation or New Physics?

    One of the major open questions in the neutrino sector is the issue of leptonic CP violation. Current global oscillation data shows a mild preference for a large, potentially maximal value for the Dirac CP phase in the neutrino mixing matrix. In this letter, we point out that New Physics in the form of neutral-current like non-standard interactions with real couplings would likely yield a similar conclusion even if CP in the neutrino sector were conserved. Therefore, the claim for a discovery of leptonic CP violation will require a robust ability to test New Physics scenarios.
     
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