Implications of neutrino mass generation from QCD confinement

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• 作者：Hooman Davoudiasl and Lisa L. Everett
• 刊名：Physics Letters B
• 出版年：2006
• 出版时间：2 March 2006
• 年：2006
• 卷：634
• 期：1
• 页码：55-58
• 全文大小：90 K

文摘

We consider the possibility that the quark condensate formed by QCD confinement generates Majorana neutrino masses m_ν via dimension seven operators. No degrees of freedom beyond the Standard Model are necessary, below the electroweak scale. Obtaining experimentally acceptable neutrino masses requires the new physics scale ΛTeV, providing a new motivation for weak-scale discoveries at the LHC. We implement this mechanism using a Z₃ symmetry which leads to a massless up quark above the QCD chiral condensate scale. We use non-helicity-suppressed light meson rare decay data to constrain Λ. Experimental constraints place a mild hierarchy on the flavor structure of dimension seven operators and the resulting neutrino mass matrix.