Lepton flavor violation in τ decays

Chuan Hung Chen, Chao Qiang Geng

Research output: Contribution to journalArticle

42 Citations (Scopus)


We study the lepton flavor violation (LFV) in tau decays in the framework of the supersymmetric seesaw mechanism with nonholomorphic terms for the lepton sector at a large tan β. In particular, we analyze two new decay modes τ→ f0(980) and τ→ K+K- arising from the scalar boson exchanges contrast to τ→ η(′) from the pseudoscalar ones. We find that the decay branching ratios of the two new modes could be not only as large as the current upper limits of O(10-7), but also larger than those of τ→ η(′). Experimental searches for the two modes are important for the LFV induced by the scalar-mediated mechanism. In addition, we show that the decay branching ratios of τ→ μ+μ- are related to those of τ→ η and τ→ f0(980).

Original languageEnglish
Article number035010
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number3
Publication statusPublished - 2006 Sep 4

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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