We predict an unconventional background free signal of the Higgs boson in R-parity violating nonminimal supersymmetric models at the Large Hadron Collider (LHC). The signal comprises a dilepton plus four hadronic jets and two large displaced vertices. The displaced leptons and jets are coming from the decay of the lightest supersymmetric particle (LSP), which is predominantly a gauge-singlet neutrino. A pair of such LSPs can couple to a Higgs boson, created via gluon fusion. We have analyzed two cases-one corresponding to the tree-level Higgs boson mass and another with the one-loop corrected mass of the Higgs boson. A reliable Higgs mass reconstruction using this signal can lead to discovery at the LHC with center-of-mass energy √s=14TeV and 5fb -1 of integrated luminosity (L). Even at √s=7TeV and L=5fb -1, a reasonable number of events are expected. Besides, mass reconstruction of a gauge-singlet LSP can provide an estimate of the seesaw scale. © 2011 American Physical Society.

Priyotosh Bandyopadhyay

Department of Physics

P. Ghosh

S. Roy

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Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN	15507998