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arXiv · 2312.02287

331 Models and Bilepton Searches at LHC

Roberta Calabrese·Alberto Orso Maria Iorio·Stefano Morisi·Giulia Ricciardi·Natascia Vignaroli
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Abstract

Despite being remarkable predictive, the Standard Model leaves unanswered several important issues, which motivate an ongoing search for its extensions. One fashionable possibility are the so-called 331 models, where the electroweak gauge group is extended to $SU_L(3)\times U(1)$. We focus on a minimal extension which includes vector-like quarks (VLQs) and new gauge bosons, performing a consistent analysis of the production at LHC of a pair of doubly-charged bileptons. We include for the first time all the relevant processes where VLQs contribute, and in particular the associate production VLQ-bilepton. Finally, we extract the bound on the bilepton mass, $m_Y>$ 1300 GeV, from a reinterpretation of a recent ATLAS search for doubly-charged Higgs bosons in multi-lepton final states.

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Roberta Calabrese, Alberto Orso Maria Iorio, Stefano Morisi, Giulia Ricciardi, Natascia Vignaroli. 2023-12-04. 331 Models and Bilepton Searches at LHC. https://arxiv.org/abs/2312.02287

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