Lepton flavor violation in supersymmetric B-L extension of the standard model

Abstract

Supersymmetric B-L extension of the Standard Model (SM) is one of the best candidate for physics beyond the SM that accounts for TeV scale seesaw mechanism and provides an attractive solution for the Higgs naturalness problem. We analyze the charged lepton flavor violation (LFV) in this class of models. We show that due to the smallness of Dirac neutrino Yukawa coupling, the decay rates of l_i -> l_j gamma and l_i -> 3 l_j, generated by the renormalization group evolution of soft SUSY breaking terms from GUT to seesaw scale, are quite suppressed. Therefore, this model is free from the stringent LFV constraints usually imposed on the supersymmetric seesaw model. We also demonstrate that the right-sneutrino is a long-lived particle and can be pair produced at the LHC through the B-L gauge boson. Then, they decay into same-sign dilepton, with a total cross section of order O(1) pb. This signal is one of the striking signatures of supersymmetric B-L extension of the SM.

17 pages

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Cited by in corpus (10)

• TeV Scale Gauged B-L With Inverse Seesaw Mechanism
• Phenomenology of the minimal B-L extension of the Standard Model at the LHC
• Right-handed sneutrino-antisneutrino oscillations in a TeV scale Supersymmetric B-L model
• Right-handed Sneutrino Inflation in SUSY B-L with Inverse Seesaw
• Ultrarelativistic sneutrinos at the LHC and sneutrino-antisneutrino oscillation
• Sneutrino-antisneutrino oscillation at the Tevatron
• Neutrinos masses in a supersymmtric model with exotic right-handed neutrinos in Global $(B-L)$ Symmetry
• Antisymmetric tensor unparticle and the radiative lepton flavor violating decays
• The Supersymmetric $(B-L)$ model with three non-identical right-handed neutrinos
• Axion-like particles from soft supersymmetry breaking