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Type-II Seesaw Model and Multilepton Signatures at Hadron Colliders

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arxiv 1611.09594 v2 pith:ZRR46ZWH submitted 2016-11-29 hep-ph

Manimala Mitra , Saurabh Niyogi , Michael Spannowsky This is my paper · ORCID
classification hep-ph
keywords chargeddoublyhiggssignaturesbosonscolliderdecaydelta
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abstract

We investigate multilepton signatures, arising from the decays of doubly charged and singly charged Higgs bosons in the Type-II Seesaw model. Depending on the vacuum expectation value of the triplet $v_{\Delta}$, the doubly and singly charged Higgs bosons can decay into a large variety of multi-lepton final states. We explore all possible decay modes corresponding to different regimes of $v_{\Delta}$, that generate distinguishing four and five leptonic signatures. We focus on the 13 TeV Large Hadron Collider (LHC) and further extend the study to a very high energy proton-proton collider (VLHC) with a center-of-mass energy of 100 TeV. We find that a doubly charged Higgs boson of masses around 375 GeV can be discovered at immediate LHC runs. A heavier mass of 630 GeV can instead be discovered at the high-luminosity run of the LHC or at the VLHC with 30 $\rm{fb}^{-1}$.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. A HEFT Perspective on the Type-II Seesaw Model and the Complete Basis of Lepton-Number-Violating Operators

    hep-ph 2026-07 accept novelty 8.0 of 10

    First complete tree-level HEFT matching of the type-II seesaw and a Hilbert-series-checked, flavor-complete basis of lepton-number-violating HEFT operators through O(p^4).

  2. On the Robustness of type-II Seesaw Collider Searches

    hep-ph 2026-03 conditional novelty 6.0 of 10

    Adding a single effective operator that makes the doubly charged Higgs decay into two leptons and a photon weakens current ATLAS limits from ~1.1 TeV to ~0.7 TeV, but requiring a hard photon in the final state restore...

  3. Probing Doubly Charged Higgs Bosons with Three-Body Associated Production at Future $e^+e^-$ Colliders

    hep-ph 2026-02 conditional novelty 6.0 of 10

    Doubly charged Higgs bosons in the type-II seesaw 2HDM can be produced via 2-to-3 associated channels at e+e- colliders with cross sections up to ~10^2 fb and good 4-lepton discovery sensitivity.

  4. Normalizing Flow-Assisted Nested Sampling on Type-II Seesaw Model

    hep-ph 2025-01 conditional novelty 6.0 of 10

    A RealNVP normalizing flow trained inside nested sampling accelerates Bayesian scans of the Type-II seesaw parameter space and yields posterior constraints on scalar masses and couplings.

  5. Multiboson Signatures of Doubly Charged Scalars at a Same-Sign Muon Collider

    hep-ph 2026-07 conditional novelty 5.0 of 10

    A same-sign muon collider at 2 TeV with 1 ab^-1 could reach 2-sigma sensitivity to Type-II seesaw doubly charged scalars decaying to WW up to roughly 425-430 GeV, slightly extending current LHC coverage.

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