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

Journal Article · Mon Feb 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.035002· OSTI ID:21409197

Khalil, Shaaban ^[1]

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1. Center for Theoretical Physics at the British University in Egypt, Sherouk City, Cairo 11837 (Egypt) and Department of Mathematics, Faculty of Science, Ain Shams University, Cairo 11566 (Egypt)

Supersymmetric B-L extension of the standard model (SM) is one of the best candidates for physics beyond the SM that accounts for the 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{sub i{yields}}l{sub j{gamma}} and l{sub i{yields}}3l{sub j}, generated by the renormalization group evolution of soft supersymmetry 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 a 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.

• OSTI ID: 21409197
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 3; Other Information: DOI: 10.1103/PhysRevD.81.035002; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

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