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Sterile Neutrinos and Global Symmetries

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 نشر من قبل S?ren Wiesenfeldt
 تاريخ النشر 2005
  مجال البحث
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We use an effective-field-theory approach to construct models with naturally light sterile neutrinos, due to either exact or accidental global symmetries. The most attractive models we find are based on gauge symmetries, either discrete or continuous. We give examples of simple models based on Z_N, U(1), and SU(2).



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