New Signals for Doubly-Charged Scalars and Fermions at the Large Hadron Collider

Abstract

Several extensions of the Standard Model have light doubly-charged Higgs bosons in their particle spectrum. The supersymmetric versions of these models introduce fermionic superpartners of these doubly-charged Higgs bosons, the Higgsinos, which also remain light. In this work we analyze a new collider signal resulting from the pair production and decay of a light doubly-charged Higgsino to an even lighter doubly-charged Higgs boson. We focus on the minimal left-right supersymmetric model with automatic R-parity conservation, which predicts such a light doubly-charged Higgs boson and its Higgsino partner at the TeV scale, which are singlets of SU(2)_L. We investigate the distinctive signatures of these particles with four leptons and missing transverse energy in the final state at the Large Hadron Collider and show that the discovery reach for both particles can be increased in this channel.

28 pages, 9 figures

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Cited by in corpus (12)

• The Physics Programme Of The MoEDAL Experiment At The LHC
• Probing Doubly Charged Higgs Bosons at the LHC through Photon Initiated Processes
• Doubly-charged particles at the Large Hadron Collider
• Low- and high-energy phenomenology of a doubly charged scalar
• Doubly charged heavy leptons at LHC via contact interactions
• Radiatively Induced Type II seesaw and Vector-like 5/3 Charge Quarks
• Upper limits on branching ratios of the lepton-flavor-violating decays $\tau \to \ell \gamma \gamma$ and $\tau \to \ell X$
• Left-right supersymmetry after the Higgs boson discovery
• The signatures of doubly charged leptons in future linear colliders
• Anatomy of Heavy Gauge Bosons in a Left-Right Supersymmetric Model
• Signal of doubly charged Higgs at $e^{+}{e}^{-}$ colliders
• Indian Contributions to LHC Theory