Displaced lepton flavour violating signatures of right-handed sneutrinos in U(1)U(1)' supersymmetric models

Nov 12, 2015
16 pages
Published in:
  • JHEP 09 (2017) 052
  • Published: Sep 13, 2017 by Springer
e-Print:

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Abstract: (Springer)
We consider a U(1)^{′} extended supersymmetric model with a right-handed neutrino superfield which can generate light neutrino mass by Type I seesaw mechanism. The lighter superpartner of the right-handed neutrino could be the scalar dark matter. These right-handed sneutrinos can come from the decay of Z~ {\tilde{Z}}^{\prime } , superpartner of the extra gauge boson Z^{′}. Left-right handed sneutrino mixings affect their decays further, giving rise to displaced “lepton flavour violating” signatures. A wino-like chargino NLSP (next to lightest supersymmetric particle) creates even more interesting decay topology. We investigate such displaced multi-leptonic final states with “lepton flavour violation” from the supersymmetric cascade decays of third generation squarks at the LHC.
Note:
  • Published version, added references
  • Supersymmetry Phenomenology
  • new physics: signature
  • Z'
  • symmetry: U(1)
  • supersymmetry
  • lepton: flavor: violation
  • seesaw model
  • neutrino: superfield
  • neutrino: cloud
  • sneutrino: right-handed
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