Lepton Flavor Violation in SUSY GUT Model with Non-universal Sfermion Masses

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dc.creatorKim, S. -G.
dc.creatorMaekawa, N.
dc.creatorMatsuzaki, A.
dc.creatorSakurai, K.
dc.creatorYoshikawa, T.
dc.date2006-12-29
dc.date2007-01-09
dc.date.accessioned2026-07-07T11:02:30Z
dc.date.available2026-07-07T11:02:30Z
dc.descriptionWe analyze lepton flavor violating $τ\to μγ$ and $μ\to e γ$ processes in SUSY GUT model in which sfermions have special mass spectrum. It is assumed that only third generation sfermions which are contained in ${\bf 10}(Q, U^c, E^c)$ of SU(5) can have a different mass from the others. This mass spectrum is led from $E_6$ GUT model with horizontal symmetries. It is shown that branching ratios of $τ\to μγ$ and $μ\to e γ$ depend strongly on a right-handed stau mass. The weak scale stability requires the light stau, so large decay rates can be expected in this scenario. When stau is around 150 GeV and $\tan β\sim 10$, the branching ratios can be larger than $Br(τ\to μγ) \simeq 10^{-8}$ and $Br(μ\to e γ) \simeq 5\times 10^{-12}$, which are within reach of future experiments. In addition, this model has an interesting feature that the final state charged lepton tends to have the right-handed chirality.
dc.description17 pages, 12 figures, v3 a reference added
dc.identifierhttps://arxiv.org/abs/hep-ph/0612370
dc.identifierhttp://arxiv.org/abs/hep-ph/0612370
dc.identifierPhys.Rev.D75:115008,2007
dc.identifierdoi:10.1103/PhysRevD.75.115008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/188272
dc.subjectHigh Energy Physics - Phenomenology
dc.titleLepton Flavor Violation in SUSY GUT Model with Non-universal Sfermion Masses
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