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Type-II seesaw model and multilepton signatures at Hadron Colliders.

Mitra, Manimala and Niyogi, Saurabh and Spannowsky, Michael (2017) 'Type-II seesaw model and multilepton signatures at Hadron Colliders.', Physical review D., 95 (3). 035042.


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.

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Publisher statement:Reprinted with permission from the American Physical Society: Mitra, Manimala, Niyogi, Saurabh & Spannowsky, Michael (2017). Type-II Seesaw Model and Multilepton Signatures at Hadron Colliders. Physical Review D 95(3): 035042 © 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modified, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.
Date accepted:18 December 2016
Date deposited:21 June 2017
Date of first online publication:28 February 2017
Date first made open access:21 June 2017

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