Indications for a Nonzero Lepton Asymmetry from Extremely Metal-Poor Galaxies.
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DOI: 10.1103/physrevlett.130.131001
Abstract: The recent measurement of helium-4 from the near-infrared spectroscopy of extremely metal-poor galaxies by the Subaru Survey may point to a new puzzle in the early Universe. We exploit this new helium measurement together with… read more here.
Keywords: poor galaxies; nonzero lepton; metal poor; extremely metal ... See more keywords