GUT relation in neutrino-induced flavor physics in SUSY SU(5) GUT

Junji Hisano, Yasuhiro Shimizu

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52 Citations (Scopus)


In the SUSY SU(5) GUT with the right-handed neutrinos, the neutrino Yukawa coupling induces the flavor-violating mass terms for the right-handed down squarks and left-handed sleptons, and they lead to imprint on the flavor physics in the hadronic and leptonic sectors. In this Letter we study CP violation in B0d and B0s, which is induced by the tau-neutrino Yukawa coupling. In particular, we notice the correlation of the CP asymmetries in B0d → φKs (SφKs) and B0s J/Ψπ (SJ/Ψφ) with other observables, such as Br(τ→μγ), the muon EDM (dμ), and the mixing-induced CP asymmetry in B0d → M0sγ (Absg), since they have a common origin of the CP and flavor violation. The measurements are expected to play a significant role for consistency check of the SUSY SU(5) GUT. The hierarchical right-handed neutrino masses make the correlation better. We find that the current bound on Br(τ →μγ) constrains the allowed region for SφKs, in this model.

Original languageEnglish
Pages (from-to)183-192
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number1-4
Publication statusPublished - 2003 Jul 17
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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