Sflavor mixing map viewed from a high scale in supersymmetric SU(5)

Pyungwon Ko, Jae Hyeon Park, Masahiro Yamaguchi

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We study flavor violation in a supersymmetric SU(5) grand unification scenario in a model-independent way employing mass insertions. We examine how the quark and the lepton sector observables restrict sfermion mixings. With a low soft scalar mass, a lepton flavor violating process provides a stringent constraint on the flavor structure of right-handed down-type squarks. In particular, μ eγ turns out to be highly susceptible to the 1-3 and 2-3 mixings thereof, due to the radiative correction from the top Yukawa coupling to the scalar mass terms of 10. With a higher scalar mass around the optimal value, in contrast, the quark sector inputs such as B-meson mixings and hadron electric dipole moment, essentially determine the room for sfermion mixing. We also discuss the recent deviation observed in B s mixing phase, projected sensitivity of forthcoming experiments, and ways to maintain the power of leptonic restrictions even after incorporating a solution to fix the incorrect quark-lepton mass relations.

Original languageEnglish
Article number051
JournalJournal of High Energy Physics
Volume2008
Issue number11
DOIs
Publication statusPublished - 2008 Nov 1

Keywords

  • B-physics
  • CP violation
  • GUT
  • Supersymmetric standard model

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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