Importance of threshold corrections in quark-lepton complementarity

Kyu Kang Sin, C. S. Kim, Jake Lee

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The recent experimental measurements of the solar neutrino mixing angle θsol and the Cabibbo mixing angle θC reveal a surprising relation, θsolC≃π/4. We note that the lepton mixing matrix derived from quark-lepton unification can lead to a shift of the complementarity relation at low energy. While the renormalization group effects generally lead to additive contribution on top of the shift, in this Letter, we show that the threshold corrections which may exist in some intermediate scale new physics such as supersymmetric standard model can diminish it, so we can achieve the complementarity relation at a low energy. Finally, we discuss a possibility to achieve the complementarity relation at a high energy by taking particular form of non-symmetric form of down Yukawa matrix.

Original languageEnglish
Pages (from-to)129-135
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume619
Issue number1-2
DOIs
Publication statusPublished - 2005 Jul 14

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leptons
quarks
thresholds
shift
solar neutrinos
matrices
energy
physics

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

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title = "Importance of threshold corrections in quark-lepton complementarity",
abstract = "The recent experimental measurements of the solar neutrino mixing angle θsol and the Cabibbo mixing angle θC reveal a surprising relation, θsol+θC≃π/4. We note that the lepton mixing matrix derived from quark-lepton unification can lead to a shift of the complementarity relation at low energy. While the renormalization group effects generally lead to additive contribution on top of the shift, in this Letter, we show that the threshold corrections which may exist in some intermediate scale new physics such as supersymmetric standard model can diminish it, so we can achieve the complementarity relation at a low energy. Finally, we discuss a possibility to achieve the complementarity relation at a high energy by taking particular form of non-symmetric form of down Yukawa matrix.",
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Importance of threshold corrections in quark-lepton complementarity. / Sin, Kyu Kang; Kim, C. S.; Lee, Jake.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 619, No. 1-2, 14.07.2005, p. 129-135.

Research output: Contribution to journalArticle

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AB - The recent experimental measurements of the solar neutrino mixing angle θsol and the Cabibbo mixing angle θC reveal a surprising relation, θsol+θC≃π/4. We note that the lepton mixing matrix derived from quark-lepton unification can lead to a shift of the complementarity relation at low energy. While the renormalization group effects generally lead to additive contribution on top of the shift, in this Letter, we show that the threshold corrections which may exist in some intermediate scale new physics such as supersymmetric standard model can diminish it, so we can achieve the complementarity relation at a low energy. Finally, we discuss a possibility to achieve the complementarity relation at a high energy by taking particular form of non-symmetric form of down Yukawa matrix.

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