Faking ZZZ vertices at the LHC
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866910598861684736 |
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| author | Cepedello, Ricardo Esser, Fabian Hirsch, Martin Sanz, Veronica |
| author_facet | Cepedello, Ricardo Esser, Fabian Hirsch, Martin Sanz, Veronica |
| contents | 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 $pp \to ZZ \to 4l$, 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 $pp \to ZZ \to 4l$ searches. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_06776 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Faking ZZZ vertices at the LHC Cepedello, Ricardo Esser, Fabian Hirsch, Martin Sanz, Veronica High Energy Physics - Phenomenology 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 $pp \to ZZ \to 4l$, 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 $pp \to ZZ \to 4l$ searches. |
| title | Faking ZZZ vertices at the LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2409.06776 |