Leptonic signatures of doubly charged Higgs boson production at the LHC

TL;DR

This paper investigates the detection prospects of doubly charged Higgs bosons at the LHC by analyzing multi-lepton signatures from different production mechanisms, showing that including at least three leptons enhances discovery potential.

Contribution

It introduces a combined search strategy for doubly charged Higgs bosons considering multiple production mechanisms and lepton signatures, improving detection prospects at the LHC.

Findings

At least three lepton final states improve detection sensitivity.

Fast detector simulations show enhanced discovery potential.

Comparison of different lepton multiplicity channels.

Abstract

The production of doubly charged Higgs bosons (H^{\pm\pm}) at the CERN LHC can give rise to distinctive multi-lepton signatures. The discovery potential of H^{\pm\pm} can be optimized by considering a search strategy which is sensitive to both of the dominant production mechanisms, q\bar q\to H^{++}H^{--} and q\bar {q'}\to H^{\pm\pm}H^{\mp}. We compare the discovery potential for the signatures of exactly four leptons and at least three leptons in the final state, using the same set of cuts. We have carried out fast detector simulations at the LHC for both signal and backgrounds for a wide range of values of the charged Higgs mass. We find that the use of the latter channel can substantially improve the detection prospects of the doubly charged Higgs boson at the LHC.