Type-II Seesaw Model and Multilepton Signatures at Hadron Colliders

Mitra, Manimala; Niyogi, Saurabh; Spannowsky, Michael

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 vΔ, the doubly and singly charged Higgs bosons can decay into a large variety of multilepton final states. We explore all possible decay modes corresponding to different regimes of vΔ 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  fb−1.

Citation

Mitra, M., Niyogi, S., & Spannowsky, M. (2017). Type-II Seesaw Model and Multilepton Signatures at Hadron Colliders. Physical Review D, 95(3), Article 035042. https://doi.org/10.1103/physrevd.95.035042

• Journal Article Type: Article
• Acceptance Date: Dec 18, 2016
• Online Publication Date: Feb 28, 2017
• Publication Date: Feb 28, 2017
• Deposit Date: Jun 19, 2017
• Publicly Available Date: Jun 21, 2017
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 95
• Issue: 3
• Article Number: 035042
• DOI: https://doi.org/10.1103/physrevd.95.035042