Ricardo Cepedello, Fabian Esser, Martin Hirsch, Veronica Sanz
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引用次数: 0
Abstract
Searches for anomalous neutral triple gauge boson couplings (NTGCs) provide important tests for the gauge structure of the standard model. At the LHC, NTGCs are searched for via the process pp → ZZ → 4l, where the two Z-bosons are on-shell. In this paper, we discuss how the same process can occur through tree-level diagrams just adding a vector-like quark (VLQ) to the standard model. Since NTGCs are generated in standard model effective theory (SMEFT) only at 1-loop order, vector like quarks could be an important alternative interpretation to, and background for, NTGC searches. Here, we construct a simple example model, discuss low-energy constraints and estimate current and future sensitivities on the model parameters from pp → ZZ → 4l searches.
期刊介绍：
The aim of the Journal of High Energy Physics (JHEP) is to ensure fast and efficient online publication tools to the scientific community, while keeping that community in charge of every aspect of the peer-review and publication process in order to ensure the highest quality standards in the journal.
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JHEP presently encompasses the following areas of theoretical and experimental physics:
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Mostly Weak Interactions
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Quantum Field Theory (phenomenology)
Strings and Branes
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Mostly Strong Interactions (phenomenology).
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