Lepton flavor violation in the supersymmetric seesaw model after the LHC 8 TeV run

Abstract

We study the lepton flavor violation in the supersymmetric seesaw model taking into account recent experimental improvements, especially for the Higgs boson mass measurement, direct searches of superpartners and the rare decay of B_s -> mu+ mu- at the LHC, the neutrino mixing angle of theta_{13} at the neutrino experiments, and the search of mu -> e gamma at the MEG experiment. We obtain the latest constraints on the parameters in the supersymmetry breaking terms and study the effect on the lepton flavor violating decays of tau -> mu gamma and mu -> e gamma. In particular, we consider two kinds of assumption on the structures in the Majorana mass matrix and the neutrino Yukawa matrix. In the case of the Majorana mass matrix proportional to the unit matrix, allowing non-vanishing CP violating parameters in the neutrino Yukawa matrix, we find that the branching ratio of tau -> mu gamma can be larger than 10^{-9} within the improved experimental limit of mu -> e gamma. We also consider the neutrino Yukawa matrix that includes the mixing only in the second and third generations, and find that a larger branching ratio of tau -> mu gamma than 10^{-9} is possible with satisfying the recent constraints.

25 pages, 7 figures

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Observation of electron-antineutrino disappearance at Daya Bay
• Indication of Electron Neutrino Appearance from an Accelerator-produced Off-axis Muon Neutrino Beam
• Estimate of BR(B -> X_s gamma) at O(alpha_s^2)
• Improved Measurement of Electron Antineutrino Disappearance at Daya Bay
• Measurement of the Higgs boson mass from the $H\to \gamma \gamma$ and $H\to Z{Z}^{\ast }\to 4\ell$ channels with the ATLAS detector using 25 fb${}^{-1}$ of $pp$ collision data
• Analysis of Br(B-->X_s gamma) at NNLO with a Cut on Photon Energy
• Lepton flavour violating semileptonic tau decays in constrained MSSM-seesaw scenarios
• Impact of ${\theta }_{13}$ on Lepton Flavour Violating processes within SUSY Seesaw
• Probing minimal supergravity in the type-I seesaw mechanism with lepton flavour violation at the CERN LHC
• Charged Lepton Decays L_i to L_j + gamma, Leptogenesis CP-Violating Parameters and Majorana Phases
• Patterns of flavor signals in supersymmetric models
• Interplay of LFV and slepton mass splittings at the LHC as a probe of the SUSY seesaw
• Status of Supersymmetric Seesaw in SO(10) models

Cited by in corpus (3)

• Flavor Physics and CP Violation
• Charged Lepton Flavor Violation in the Semi-Constrained NMSSM with Right-Handed Neutrinos
• Leptonic CP and Flavor Violations in SUSY GUT with Right-handed Neutrinos